add clear button

app.py

@@ -126,7 +126,9 @@ with gr.Blocks() as demo:
             question = gr.Textbox(label="Question")
             document = gr.Textbox(label="Document")
             answer = gr.Textbox(label="Answer")
-            submit_button = gr.Button("Submit")
+            with gr.Row():
+                clear_btn = gr.ClearButton([question, document, answer])
+                submit_button = gr.Button("Submit")
         with gr.Column(scale=1):
             reasoning = gr.Textbox(label="Reasoning")
             score = gr.Textbox(label="Score (FAIL if Hallucinated, PASS if not)")