Update main.py

main.py

@@ -7,8 +7,8 @@ import pandas  # to work with pandas
 import json  # to work with JSON
 import datasets  # to load the dataset
 import spaces  # for GPU
-import threading
-import time
+import threading  # for threading
+import time   # for better HCI
 
 # Constants
 GREETING = "Hi there! I'm an AI agent that uses a [retrieval-augmented generation](https://en.wikipedia.org/wiki/Retrieval-augmented_generation) pipeline to answer questions about research by the Design Research Collective. And the best part is that I always cite my ssources! What can I tell you about today?"