updated prompt

app.py

@@ -137,7 +137,7 @@ def main():
 
         st.divider()
 
-        prompt_txt = 'Summarize this document in a 3-5 sentences.'
+        prompt_txt = 'You are a trusted scientific expert that only responds truthfully to inquiries. Summarize this document in a 3-5 sentences.'
         prompt = st.text_area(
             label="Enter your query.",
             key="prompt_widget",