Update app.py

app.py

@@ -137,7 +137,7 @@ class AnswerValidator(Tool):
         self.inputs = {"question": {"type": "string", "description": "The question"}, "answer": {"type": "string", "description": "The answer to validate"}}
         self.output_type = "string"
     
-    def validate_answer(self, question: str, answer: str) -> str:
+    def forward(self, question: str, answer: str) -> str:
         """Check if answer is reasonable for the question"""
         q_lower = question.lower()
         a_lower = answer.lower()