update examples

gradio_app.py

@@ -90,9 +90,9 @@ with block:
 
     examples = gr.Examples(
         examples=[
-            "How can I perform backpropagation?",
+            "What's a genetic algorithm?",
+            "What's PCA? What is it used for?",
             "How do I deal with noisy data?",
-            "How do I deal with noisy data in 2 words?",
         ],
         inputs=question,
     )