Update app.py

app.py

@@ -28,14 +28,18 @@ def invoke(openai_api_key, prompt, rag_option):
         if (RAG_INGESTION):
             return rag_ingestion(collection)
         else:
-            ###
+            ### Pre-retrieval processing: index filter
+            ### Post-retrieval processing: result filter
+            """
             match_stage = {
                 "$match": {
-                   "accommodates": { "$gt": 1, "$lt": 3}
+                    "address.country": re.compile(r"United States"),
+                    "accommodates": { "$gt": 1, "$lt": 3}
                 }
             }
     
             additional_stages = [match_stage]
+            """
             ###
             
             search_results = rag_retrieval(openai_api_key, prompt, db, collection, additional_stages)