add clear btn

app.py

@@ -21,10 +21,12 @@ with gr.Blocks(css=css) as demo:
             image = gr.Image(sources=["upload", "clipboard"], type="filepath", height=330)
             additional_context = gr.Textbox(interactive=True, label="Add additional context here (optional)")
             submit_btn = gr.Button("Submit", variant="primary")
+            clear_btn = gr.Button("Clear", variant="secondary")
 
         response = gr.Textbox(label="Answer")
 
         submit_btn.click(get_caption, [image, additional_context], outputs=[response])
+        clear_btn.click(lambda x: "", [response], outputs=[response])
 
 if __name__ == "__main__":
     demo.launch()