Update app.

app.py

@@ -256,10 +256,9 @@ def run_model(mode_set, user_input):
         with st.spinner('Generating output %d of %d with mode %s'%(i,len(mode_set),mode_id)):
             # construct prompt
             inquire_prompt = ""
-            for from_key in current_mode['from']:
-                inquire_prompt = inquire_prompt + ("%s: %s " % (from_key,current_input[from_key]))
             to_key = current_mode['to']
-            #inquire_prompt = inquire_prompt + to_key + ":" # comment out this line if custom prefix used
+            for from_key in current_mode['from']:
+                inquire_prompt = inquire_prompt + (f"{to_key}: {from_key}: {current_input[from_key]}")
             # inquire model
             inputs = inquire_prompt
             out = inference(inputs, INFERENCE_PARAMS) 
@@ -427,7 +426,7 @@ def main():
 
 
         # Show output 
-        col_source, col_reco = st.beta_columns(2)
+        col_source, col_reco = st.columns(2)
         with col_source:
             st.markdown(f'<div style="font-size: small">Reasons and conclusions in source text</div>',unsafe_allow_html=True)
             st.write(HTML_WRAPPER.format(displacy_html), unsafe_allow_html=True)