Update app.py

app.py

@@ -16,9 +16,9 @@ from langchain.output_parsers.openai_functions import JsonOutputFunctionsParser
 from langchain_core.prompts import ChatPromptTemplate, MessagesPlaceholder
 from langgraph.graph import StateGraph, END
 from typing import Annotated, Sequence, TypedDict
-from langchain_core.tools import tool
 import functools
 import operator
+from langchain_core.tools import tool
 
 # Load environment variables
 OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
@@ -47,6 +47,7 @@ def agent_node(state, agent, name):
 
 @tool
 def RAG(state):
+    """Use this tool to execute RAG. If the question is related to Japan or Sports, this tool retrieves the results."""
     st.session_state.outputs.append('-> Calling RAG ->')
     question = state
     template = """Answer the question based only on the following context:\n{context}\nQuestion: {question}"""