Update app.py

app.py

@@ -258,11 +258,22 @@ with gr.Blocks(css="""#chatbot { font-size: 14px; min-height: 1200; }""") as dem
             file = gr.File(label='Upload your PDF/ Research Paper / Book here', file_types=['.pdf'])
             question = gr.Textbox(label='Enter your question here')
             gr.Examples(
-                # Example setup remains the same...
+                examples = gr.Examples(
+                examples=questions,
+                inputs=question,
+                label="PRE-DEFINED QUESTIONS: Click on a question to auto-fill the input box, then press Enter!"
+            )
             )
             model = gr.Radio([
-                # Model selection remains the same...
+                'gpt-3.5-turbo', 
+                'gpt-3.5-turbo-16k', 
+                'gpt-3.5-turbo-0613', 
+                'gpt-3.5-turbo-16k-0613', 
+                'text-davinci-003',
+                'gpt-4',
+                'gpt-4-32k'
             ], label='Select Model', default='gpt-3.5-turbo')
+
             btn = gr.Button(value='Submit')
             btn.style(full_width=True)
         with gr.Group():