add placeholder

app.py

@@ -25,7 +25,7 @@ def search(query):
     hits = [hit for _, hit in sorted(zip(cross_scores, hits), reverse=True)]
     return hits[0]
 
-iface = gr.Interface(fn=search, inputs="text", outputs="text")
+iface = gr.Interface(fn=search, inputs=gr.Textbox(lines=2, placeholder="Write a question to the Wikipedia..."), outputs="text")
 iface.launch()
 
 #print(search("what is the balloon boy hoax"))