Update placeholder text

app.py

@@ -166,7 +166,7 @@ class ModelComparisonApp:
             'category': gr.Dropdown(choices=list(CATEGORY_MAPPING.keys()),
                                   label="Select a Question Category", interactive=True, scale=1),
             'question': gr.Textbox(label="Type a Question", max_lines=1,
-                                 placeholder="e.g. What is the relationship between characters?",
+                                 placeholder="e.g. What is the relationship between Harry Potter and Sirius Black?",
                                  interactive=True, scale=2),
             'send': gr.Button("Send", scale=0, variant="primary", interactive=False)
         }