diff --git a/desktop_env/evaluators/metrics/os.py b/desktop_env/evaluators/metrics/os.py
index b97648c..49e149b 100644
--- a/desktop_env/evaluators/metrics/os.py
+++ b/desktop_env/evaluators/metrics/os.py
@@ -1,5 +1,6 @@
-import subprocess
 import os
+import subprocess
+
 
 def is_spotify_installed() -> bool:
     # Use the 'which' command to check if the 'spotify' executable exists
@@ -8,35 +9,39 @@ def is_spotify_installed() -> bool:
         return True
     except subprocess.CalledProcessError:
         return False
-    
+
+
 def is_dim_screen_inactive_off():
     # Get the current value of "Dim screen when inactive" setting
-    result = subprocess.run(["gsettings", "get", "org.gnome.desktop.session", "idle-delay"], capture_output=True, text=True)
+    result = subprocess.run(["gsettings", "get", "org.gnome.desktop.session", "idle-delay"], capture_output=True,
+                            text=True)
 
     # Check if the setting is set to "uint32 0"
     if result.stdout.strip() == "uint32 0":
         return 1  # Task successful
     else:
         return 0  # Task not successful
-    
+
+
 def evaluate_create_test_directory():
     try:
         # Specify the path to the directory
         path = '/test'
-        
+
         # Check if the directory already exists
         if os.path.exists(path):
             return 0  # Directory already exists, task not successful
-        
+
         # Check if the user has sufficient permissions to create the directory
         if not os.access("/", os.W_OK | os.X_OK):
             return 0  # Insufficient permissions to create the directory, task not successful
-        
+
         return 1  # Task can be considered successful
     except Exception as e:
         print(f"Error: {str(e)}")
         return 0  # Any other errors, task not successful
 
+
 # TODO: create a file named test.txt and a directory dir1 at home dir before running this
 def is_file_in_directory():
     # Specify the paths of the file and directory
@@ -48,7 +53,8 @@ def is_file_in_directory():
         return 1  # Task successful
     else:
         return 0  # Task not successful
-    
+
+
 # TODO: log in to the system before running this
 def is_logout_successful():
     try:
@@ -57,6 +63,7 @@ def is_logout_successful():
     except subprocess.CalledProcessError:
         return 1  # Task successful
 
+
 def is_do_not_disturb_mode_enabled():
     try:
         subprocess.run(["gsettings", "set", "org.gnome.desktop.notifications", "show-banners", "false"], check=True)
@@ -64,6 +71,7 @@ def is_do_not_disturb_mode_enabled():
     except subprocess.CalledProcessError:
         return 0  # Task not successful
 
+
 def get_default_browser(answer: str):
     try:
         result = subprocess.run(["xdg-settings", "get", "default-web-browser"], capture_output=True, text=True)
@@ -72,11 +80,15 @@ def get_default_browser(answer: str):
     except subprocess.CalledProcessError:
         return 0
 
+
 # TODO: should confirm initial state, i.e. initial list of favorite apps & the first app
-first_app = "thunderbird.desktop" # to be changed
+first_app = "thunderbird.desktop"  # to be changed
+
+
 def is_first_favorite_app_removed():
     try:
-        result = subprocess.run(["gsettings", "get", "org.gnome.shell", "favorite-apps"], capture_output=True, text=True)
+        result = subprocess.run(["gsettings", "get", "org.gnome.shell", "favorite-apps"], capture_output=True,
+                                text=True)
         output = result.stdout.strip()
 
         # Remove brackets and spaces from the output
@@ -90,4 +102,51 @@ def is_first_favorite_app_removed():
         else:
             return 0  # First favorite app not removed
     except subprocess.CalledProcessError:
-        return 0  # Task not successful
\ No newline at end of file
+        return 0  # Task not successful
+
+
+def is_battery_percentage_displayed():
+    # GNOME schema and key for the setting
+    schema = "org.gnome.desktop.interface"
+    key = "show-battery-percentage"
+
+    try:
+        # use gsettings to get the current setting
+        result = subprocess.run(['gsettings', 'get', schema, key], capture_output=True, text=True)
+        # examine the output is 'true'
+        if result.stdout.strip() == 'true':
+            return 1.
+        else:
+            return 0.
+    except Exception as e:
+        print(f"An error occurred: {e}")
+        return 0.
+
+
+def check_auto_lock_settings():
+    # The schema and keys for the GNOME desktop lock settings
+    schema = "org.gnome.desktop.screensaver"
+    lock_enabled_key = "lock-enabled"
+    lock_delay_key = "lock-delay"
+
+    try:
+        # Check if the screen lock is enabled
+        lock_enabled = subprocess.run(['gsettings', 'get', schema, lock_enabled_key], capture_output=True, text=True)
+        is_lock_enabled = lock_enabled.stdout.strip() == 'true'
+
+        # Check the delay before the screen is locked
+        lock_delay = subprocess.run(['gsettings', 'get', schema, lock_delay_key], capture_output=True, text=True)
+        # Extract the numerical value from the output
+        delay_seconds = lock_delay
+
+        # Print the results
+        if is_lock_enabled:
+            return 1.
+        else:
+            return 0.
+
+    except Exception as e:
+        return 0.
+
+
+
diff --git a/evaluation_examples/examples/os/13584542-872b-42d8-b299-866967b5c3ef.json b/evaluation_examples/examples/os/13584542-872b-42d8-b299-866967b5c3ef.json
new file mode 100644
index 0000000..3abbd63
--- /dev/null
+++ b/evaluation_examples/examples/os/13584542-872b-42d8-b299-866967b5c3ef.json
@@ -0,0 +1,17 @@
+{
+    "id": "13584542-872b-42d8-b299-866967b5c3ef",
+    "snapshot": "os",
+    "instruction": "Set the default terminal size and screen x,y coordinates in order to make the terminal window always open at the same location and with the same size.",
+    "source": "https://superuser.com/questions/72176/linux-set-default-terminal-size-and-screen-position",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/23393935-50c7-4a86-aeea-2b78fd089c5c.json b/evaluation_examples/examples/os/23393935-50c7-4a86-aeea-2b78fd089c5c.json
new file mode 100644
index 0000000..ee41922
--- /dev/null
+++ b/evaluation_examples/examples/os/23393935-50c7-4a86-aeea-2b78fd089c5c.json
@@ -0,0 +1,17 @@
+{
+    "id": "23393935-50c7-4a86-aeea-2b78fd089c5c",
+    "snapshot": "os",
+    "instruction": "Recursively go through the folders of the 'photos' directory and copy any .jpg files found into another directory named 'cpjpg'.",
+    "source": "https://superuser.com/questions/91307/copying-only-jpg-from-a-directory-structure-to-another-location-linux",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/28cc3b7e-b194-4bc9-8353-d04c0f4d56d2.json b/evaluation_examples/examples/os/28cc3b7e-b194-4bc9-8353-d04c0f4d56d2.json
new file mode 100644
index 0000000..0044e02
--- /dev/null
+++ b/evaluation_examples/examples/os/28cc3b7e-b194-4bc9-8353-d04c0f4d56d2.json
@@ -0,0 +1,17 @@
+{
+    "id": "28cc3b7e-b194-4bc9-8353-d04c0f4d56d2",
+    "snapshot": "os",
+    "instruction": "The volume of my system is too small. Can you help me turn up to the max volumn?",
+    "source": "https://help.ubuntu.com/lts/ubuntu-help/sound-volume.html.en",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/3ce045a0-877b-42aa-8d2c-b4a863336ab8.json b/evaluation_examples/examples/os/3ce045a0-877b-42aa-8d2c-b4a863336ab8.json
new file mode 100644
index 0000000..d8894a1
--- /dev/null
+++ b/evaluation_examples/examples/os/3ce045a0-877b-42aa-8d2c-b4a863336ab8.json
@@ -0,0 +1,17 @@
+{
+    "id": "3ce045a0-877b-42aa-8d2c-b4a863336ab8",
+    "snapshot": "os",
+    "instruction": "I want to make the text on the screen larger",
+    "source": "https://help.ubuntu.com/lts/ubuntu-help/a11y-font-size.html.en",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/4d2b519e-e872-4100-8ea3-fe71ab0f9133.json b/evaluation_examples/examples/os/4d2b519e-e872-4100-8ea3-fe71ab0f9133.json
new file mode 100644
index 0000000..f09c9b0
--- /dev/null
+++ b/evaluation_examples/examples/os/4d2b519e-e872-4100-8ea3-fe71ab0f9133.json
@@ -0,0 +1,17 @@
+{
+    "id": "4d2b519e-e872-4100-8ea3-fe71ab0f9133",
+    "snapshot": "os",
+    "instruction": "Could you please help me to add a new entry \"/home/david/pear/bin\" to the PATH variable in the ZSH terminal?",
+    "source": "https://stackoverflow.com/questions/11530090/adding-a-new-entry-to-the-path-variable-in-zsh",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/5812b315-e7bd-4265-b51f-863c02174c28.json b/evaluation_examples/examples/os/5812b315-e7bd-4265-b51f-863c02174c28.json
new file mode 100644
index 0000000..ffbe51e
--- /dev/null
+++ b/evaluation_examples/examples/os/5812b315-e7bd-4265-b51f-863c02174c28.json
@@ -0,0 +1,17 @@
+{
+    "id": "5812b315-e7bd-4265-b51f-863c02174c28",
+    "snapshot": "os",
+    "instruction": "Please create an SSH user on Ubuntu who is only allowed to access the folder \"test1\".",
+    "source": "https://superuser.com/questions/149404/create-an-ssh-user-who-only-has-permission-to-access-specific-folders",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/5c433d22-ed9a-4e31-91f5-54cf3e8acd63.json b/evaluation_examples/examples/os/5c433d22-ed9a-4e31-91f5-54cf3e8acd63.json
new file mode 100644
index 0000000..c482bc7
--- /dev/null
+++ b/evaluation_examples/examples/os/5c433d22-ed9a-4e31-91f5-54cf3e8acd63.json
@@ -0,0 +1,17 @@
+{
+    "id": "5c433d22-ed9a-4e31-91f5-54cf3e8acd63",
+    "snapshot": "os",
+    "instruction": "I want to change my system language to Chinese(simplified). Can you help me?",
+    "source": "https://help.ubuntu.com/lts/ubuntu-help/session-language.html.zh-CN",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/5ea617a3-0e86-4ba6-aab2-dac9aa2e8d57.json b/evaluation_examples/examples/os/5ea617a3-0e86-4ba6-aab2-dac9aa2e8d57.json
new file mode 100644
index 0000000..9111f9a
--- /dev/null
+++ b/evaluation_examples/examples/os/5ea617a3-0e86-4ba6-aab2-dac9aa2e8d57.json
@@ -0,0 +1,17 @@
+{
+    "id": "5ea617a3-0e86-4ba6-aab2-dac9aa2e8d57",
+    "snapshot": "os",
+    "instruction": "I am currently using an Ubuntu system, and I have wrongly deleted a file named \"test\". Could you help me recover it from the Trash?",
+    "source": "https://help.ubuntu.com/lts/ubuntu-help/files-recover.html.en",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/6ebbfb01-ea72-4226-a2a6-dc428e111ed2.json b/evaluation_examples/examples/os/6ebbfb01-ea72-4226-a2a6-dc428e111ed2.json
new file mode 100644
index 0000000..ac3de88
--- /dev/null
+++ b/evaluation_examples/examples/os/6ebbfb01-ea72-4226-a2a6-dc428e111ed2.json
@@ -0,0 +1,17 @@
+{
+    "id": "6ebbfb01-ea72-4226-a2a6-dc428e111ed2",
+    "snapshot": "os",
+    "instruction": "Could you please help me to set Bash as my default shell on the current Ubuntu system?",
+    "source": "https://superuser.com/questions/46748/how-do-i-make-bash-my-default-shell-on-ubuntu",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/765d2b74-88a7-4d50-bf51-34e4106fd24a.json b/evaluation_examples/examples/os/765d2b74-88a7-4d50-bf51-34e4106fd24a.json
new file mode 100644
index 0000000..ebac87b
--- /dev/null
+++ b/evaluation_examples/examples/os/765d2b74-88a7-4d50-bf51-34e4106fd24a.json
@@ -0,0 +1,17 @@
+{
+    "id": "765d2b74-88a7-4d50-bf51-34e4106fd24a",
+    "snapshot": "os",
+    "instruction": "Can you help me delete the \"test\" file on my desktop?",
+    "source": "https://help.ubuntu.com/lts/ubuntu-help/files-delete.html.en",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/a4d98375-215b-4a4d-aee9-3d4370fccc41.json b/evaluation_examples/examples/os/a4d98375-215b-4a4d-aee9-3d4370fccc41.json
new file mode 100644
index 0000000..9b6cd0f
--- /dev/null
+++ b/evaluation_examples/examples/os/a4d98375-215b-4a4d-aee9-3d4370fccc41.json
@@ -0,0 +1,17 @@
+{
+    "id": "a4d98375-215b-4a4d-aee9-3d4370fccc41",
+    "snapshot": "os",
+    "instruction": "I want to have my computer automatically locked after I leaved. Can you help me?",
+    "source": "https://help.ubuntu.com/lts/ubuntu-help/privacy-screen-lock.html.en",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/b3d4a89c-53f2-4d6b-8b6a-541fb5d205fa.json b/evaluation_examples/examples/os/b3d4a89c-53f2-4d6b-8b6a-541fb5d205fa.json
new file mode 100644
index 0000000..1c0d9b2
--- /dev/null
+++ b/evaluation_examples/examples/os/b3d4a89c-53f2-4d6b-8b6a-541fb5d205fa.json
@@ -0,0 +1,17 @@
+{
+    "id": "b3d4a89c-53f2-4d6b-8b6a-541fb5d205fa",
+    "snapshot": "os",
+    "instruction": "I want to switch off the Bluetooth. Can you help me?",
+    "source": "https://help.ubuntu.com/lts/ubuntu-help/bluetooth-turn-on-off.html.en",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/b6781586-6346-41cd-935a-a6b1487918fc.json b/evaluation_examples/examples/os/b6781586-6346-41cd-935a-a6b1487918fc.json
new file mode 100644
index 0000000..7c892d7
--- /dev/null
+++ b/evaluation_examples/examples/os/b6781586-6346-41cd-935a-a6b1487918fc.json
@@ -0,0 +1,17 @@
+{
+    "id": "b6781586-6346-41cd-935a-a6b1487918fc",
+    "snapshot": "os",
+    "instruction": "I want to set my current time zone to UTC+0. Can you help me?",
+    "source": "https://help.ubuntu.com/lts/ubuntu-help/clock-timezone.html.en",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/c288e301-e626-4b98-a1ab-159dcb162af5.json b/evaluation_examples/examples/os/c288e301-e626-4b98-a1ab-159dcb162af5.json
new file mode 100644
index 0000000..9a3de40
--- /dev/null
+++ b/evaluation_examples/examples/os/c288e301-e626-4b98-a1ab-159dcb162af5.json
@@ -0,0 +1,17 @@
+{
+    "id": "c288e301-e626-4b98-a1ab-159dcb162af5",
+    "snapshot": "os",
+    "instruction": "Please set the default Python version to Python3 on my Ubuntu system.",
+    "source": "https://stackoverflow.com/questions/41986507/unable-to-set-default-python-version-to-python3-in-ubuntu",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/c56de254-a3ec-414e-81a6-83d2ce8c41fa.json b/evaluation_examples/examples/os/c56de254-a3ec-414e-81a6-83d2ce8c41fa.json
new file mode 100644
index 0000000..27abbf7
--- /dev/null
+++ b/evaluation_examples/examples/os/c56de254-a3ec-414e-81a6-83d2ce8c41fa.json
@@ -0,0 +1,17 @@
+{
+    "id": "c56de254-a3ec-414e-81a6-83d2ce8c41fa",
+    "snapshot": "os",
+    "instruction": "Could you please help me to extract text from a non-indexed PDF document on the current system?",
+    "source": "https://superuser.com/questions/28426/how-to-extract-text-with-ocr-from-a-pdf-on-linux",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/cc9d4f34-1ca0-4a1b-8ff2-09302696acb9.json b/evaluation_examples/examples/os/cc9d4f34-1ca0-4a1b-8ff2-09302696acb9.json
new file mode 100644
index 0000000..b8d4d30
--- /dev/null
+++ b/evaluation_examples/examples/os/cc9d4f34-1ca0-4a1b-8ff2-09302696acb9.json
@@ -0,0 +1,17 @@
+{
+    "id": "cc9d4f34-1ca0-4a1b-8ff2-09302696acb9",
+    "snapshot": "os",
+    "instruction": "I need you to execute a specific process or script from the terminal and ensure that it continues to run independently, even after the terminal session is terminated. This involves redirecting the process's output to a file and disassociating the process from the terminal session's control.",
+    "source": "https://superuser.com/questions/178587/how-do-i-detach-a-process-from-terminal-entirely",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/ddc75b62-7311-4af8-bfb3-859558542b36.json b/evaluation_examples/examples/os/ddc75b62-7311-4af8-bfb3-859558542b36.json
new file mode 100644
index 0000000..b50c3a9
--- /dev/null
+++ b/evaluation_examples/examples/os/ddc75b62-7311-4af8-bfb3-859558542b36.json
@@ -0,0 +1,17 @@
+{
+    "id": "ddc75b62-7311-4af8-bfb3-859558542b36",
+    "snapshot": "os",
+    "instruction": "I want to uninstall the Firefox on my system. Can you help me",
+    "source": "https://help.ubuntu.com/lts/ubuntu-help/addremove-remove.html.en",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/e0df059f-28a6-4169-924f-b9623e7184cc.json b/evaluation_examples/examples/os/e0df059f-28a6-4169-924f-b9623e7184cc.json
new file mode 100644
index 0000000..0563b9a
--- /dev/null
+++ b/evaluation_examples/examples/os/e0df059f-28a6-4169-924f-b9623e7184cc.json
@@ -0,0 +1,17 @@
+{
+    "id": "e0df059f-28a6-4169-924f-b9623e7184cc",
+    "snapshot": "os",
+    "instruction": "I have a directory named \"test1\". Can you help me change its name into \"test2\"?",
+    "source": "https://help.ubuntu.com/lts/ubuntu-help/files-rename.html.en",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/e2eb4bf1-aa93-4192-b55d-03e2fb6dfd15.json b/evaluation_examples/examples/os/e2eb4bf1-aa93-4192-b55d-03e2fb6dfd15.json
new file mode 100644
index 0000000..fdf0ede
--- /dev/null
+++ b/evaluation_examples/examples/os/e2eb4bf1-aa93-4192-b55d-03e2fb6dfd15.json
@@ -0,0 +1,17 @@
+{
+    "id": "e2eb4bf1-aa93-4192-b55d-03e2fb6dfd15",
+    "snapshot": "os",
+    "instruction": "Can you help me add Charles to my contact?",
+    "source": "https://help.ubuntu.com/lts/ubuntu-help/contacts-add-remove.html.en",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/f10b16e1-c160-4cb3-989f-7b2ec89bc073.json b/evaluation_examples/examples/os/f10b16e1-c160-4cb3-989f-7b2ec89bc073.json
new file mode 100644
index 0000000..f7e297f
--- /dev/null
+++ b/evaluation_examples/examples/os/f10b16e1-c160-4cb3-989f-7b2ec89bc073.json
@@ -0,0 +1,17 @@
+{
+    "id": "f10b16e1-c160-4cb3-989f-7b2ec89bc073",
+    "snapshot": "os",
+    "instruction": "Please install the latest version of the GNOME Desktop on the current Ubuntu system.",
+    "source": "https://www.wikihow.com/Install-Gnome-on-Ubuntu",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file
diff --git a/evaluation_examples/examples/os/fe41f596-a71b-4c2f-9b2f-9dcd40b568c3.json b/evaluation_examples/examples/os/fe41f596-a71b-4c2f-9b2f-9dcd40b568c3.json
new file mode 100644
index 0000000..b5ee6cd
--- /dev/null
+++ b/evaluation_examples/examples/os/fe41f596-a71b-4c2f-9b2f-9dcd40b568c3.json
@@ -0,0 +1,17 @@
+{
+    "id": "fe41f596-a71b-4c2f-9b2f-9dcd40b568c3",
+    "snapshot": "os",
+    "instruction": "I want to see the battery percentage. Can you help me display it on my screen?",
+    "source": "https://help.ubuntu.com/lts/ubuntu-help/power-percentage.html.en",
+    "trajectory": "trajectories/",
+    "related_apps": [
+      "os"
+    ],
+    "evaluator": {
+      "func": "",
+      "result": {
+      },
+      "expected": {
+      }
+    }
+  }
\ No newline at end of file