optimised the answer_question function

agent.py

@@ -65,6 +65,8 @@ agent = CodeAgent(
 )
 
 def answer_question(question: str) -> str:
-    """Run agent on question and format output"""
     result = agent.run(question)
-    return f"FINAL ANSWER: {result}" if "FINAL ANSWER:" not in result else result
+    # Ensure output starts with "FINAL ANSWER:"
+    if not result.strip().startswith("FINAL ANSWER:"):
+        result = f"FINAL ANSWER: {result.strip()}"
+    return result