Update app.py

app.py

@@ -18,6 +18,13 @@ if 'df' not in st.session_state:
 # Streamlit app
 st.title("Conversation Analysis")
 
+# Introduction and Explanation
+st.markdown("""
+**Go beyond static visualizations!** This app lets you directly ask for the insights you need from Polis conversation data. 
+Instead of being limited to a standard PCA chart, you can request custom plots and analyses using natural language. 
+For example, try asking for: "**Show me a pie chart of the most common sentiment expressed in these comments.**"
+""")
+
 # Step 1: Choose conversation
 opendata_options = [
     '15-per-hour-seattle', 'american-assembly.bowling-green', 'brexit-consensus',