input: Write a python function to classify instructions into categories such as "open-ended", "editing", "classification", and "optimization".
  assert classify_instruction("write a Python program to sort a list") == "open-ended"
  assert classify_instruction("edit the function to improve performance") == "editing"
  assert classify_instruction("classify these documents into categories") == "classification"
  assert classify_instruction("optimize the database queries for faster response") == "optimization"
  assert classify_instruction("design a new feature for the application") == ""
output: def classify_instruction(instruction):
      if "write" in instruction or "create" in instruction:
          return "open-ended"
      elif "edit" in instruction or "modify" in instruction:
          return "editing"
      elif "classify" in instruction or "categorize" in instruction:
          return "classification"
      elif "optimize" in instruction or "improve" in instruction:
          return "optimization"
      else:
          return ""