Update app.py

app.py

@@ -80,7 +80,9 @@ history_aware_retriever = create_history_aware_retriever(
 qa_system_prompt = """You are an assistant for question-answering tasks.
 Use the following pieces of retrieved context to answer the question.
 If you don't know the answer, just say that you don't know.
-Use three sentences maximum and keep the answer concise."""
+Use three sentences maximum and keep the answer concise.
+
+{context}"""
 qa_prompt = ChatPromptTemplate.from_messages(
     [
         ("system", qa_system_prompt),