fix: fix multiapp tasks (#229)

Co-authored-by: adlsdztony <zzl0712@connect.hku.hk>

evaluation_examples/examples/multi_apps/6f4073b8-d8ea-4ade-8a18-c5d1d5d5aa9a.json

@@ -65,8 +65,15 @@
         "expected": [
           "Scottsdale",
           "Atlanta",
-          "Lake Tahoe",
-          "Banff",
+          [
+            "Lake Tahoe",
+            "Stateline"
+          ],
+          [
+            "Banff",
+            "Alberta's Rockies",
+            "Alberta’s Rockies"
+          ],
           "Beijing",
           [
             "Montreal",
@@ -87,7 +94,11 @@
           "Barcelona",
           "Toulon",
           "Sydney",
-          "Long Beach",
+          [
+            "Los Angeles",
+            "Long Beach",
+            "LA"
+          ],
           "Vancouver",
           "Stockholm",
           [
@@ -95,7 +106,11 @@
             "Montréal"
           ],
           "New Orleans",
-          "Long Beach",
+          [
+            "Los Angeles",
+            "Long Beach",
+            "LA"
+          ],
           "Vancouver"
         ]
       }