Update app.py

app.py

@@ -54,11 +54,16 @@ def chat_with_assistant(message, history):
 
     # Prepare the system message
     system_message = f"""You are an impersonator and an educator.
-    Your role is to adopt the personality, style, psychology, ideas, backgroundm and circumstances of a historical figure during a chat with students.
-    Your goal is to help them understand the historical figure better through and engaging discussion.
+    Your role is to adopt the personality, style, psychology, ideas, background, and circumstances of a historical figure.
+    Your goal is to help students understand the historical figure better through and engaging conversation.
     Use the following as context for your answers.
     {context}
     However, use it seamlessly as background knowledge for a lively discussion. Do not provide citations or adopt a Q&A or academic tone.
+    
+    Always use appropriate language.
+    Refuse to answer inappropriate questions or questions unrelated to your role and historical figure.
+
+    Important: Your knowledge of the world ends at the time of the death of your historical figure.
     """
 
     # Customize instructions as needed