code: def bot(history):
      response = "**That's cool!**"
      history[-1][1] = ""
      for character in response:
          history[-1][1] += character
          time.sleep(0.05)
          yield history
  
imports: import gradio
  import os
  import time
label_desc: Use image node_id 4 for calling a global function with example usage: bot(history) without return types