Update app.py

app.py

@@ -14,7 +14,7 @@ load_dotenv()
 # Hyperparameters
 PDF_CHUNK_SIZE = 1024
 PDF_CHUNK_OVERLAP = 256
-k = 3
+k = 7
 
 # Load favicon image
 def load_and_pad_image(image_path, size=(64, 64)):
@@ -97,7 +97,7 @@ def main():
         )
 
         system_prompt = """
-        You are a friendly and knowledgeable assistant who is an expert in medical education...
+        You are a friendly and knowledgeable assistant who is an expert in medical education who will only answer from the context provided.
         """
 
         template = f"""