Update app.py

app.py

@@ -120,6 +120,7 @@ with gr.Blocks(theme="Nymbo/Alyx_Theme") as demo:
         pdf_input = gr.File(label="Upload PDF", file_types=[".pdf"])
         index_button = gr.Button("Index PDF")
         load_sample = gr.Button("Alternatively, Load and Index [Attention Is All You Need.pdf] as a Sample")
+        sample_description = gr.Markdown("This sample PDF is a seminal paper in the field of machine learning, titled 'Attention Is All You Need' at https://arxiv.org/abs/1706.03762. It introduces the Transformer model, which has become foundational in natural language processing.")
         index_output = gr.Textbox(label="Indexing Status")
         index_button.click(index_pdf, inputs=pdf_input, outputs=index_output)
         load_sample.click(load_sample_pdf, inputs=None, outputs=index_output)