Update app.py

app.py

@@ -82,7 +82,7 @@ def format_docs_with_id(docs: List[Document]) -> str:
 def prompt_fn():
 
     return (
-            "You are an expert pharmachemist, answer the question based on the context."
+            "You are an expert pharmachemist, answer the question based on the context. Do not answer anything not related to pharmachemistry."
             "\n\nHere is the context: "
             "{context}"
             )