Update app.py

Trying updating output of tool (as expected) from str, str to tuple

app.py

@@ -90,7 +90,7 @@ def get_current_time_in_timezone(timezone: str) -> str:
     except Exception as e:
         return f"Error fetching time for timezone '{timezone}': {str(e)}"
 @tool
-def summarize_and_answer_from_web(url: str, question:str) -> str, str:
+def summarize_and_answer_from_web(url: str, question:str) -> tuple:
     '''
     A tool which takes a pair of inputs, a website and a question, and finds all relevant information 
     about that question from the website, and return both the summary and the answer