input: from typing import List
  
  def generate_response(question: str, answers: dict) -> str:
      """ Generate a response to a user's query about a product or service. If the question
      is in the predefined answers, return the corresponding answer. Otherwise, return a 
      random response indicating uncertainty.
      >>> generate_response('What is XYZ?', {'What is XYZ?': 'XYZ is a company that provides XYZ services.'})
      'XYZ is a company that provides XYZ services.'
      >>> generate_response('What are the benefits of using XYZ?', {'What are the benefits of using XYZ?': 'XYZ provides a quick and easy way to find solutions to your problems.'})
      'XYZ provides a quick and easy way to find solutions to your problems.'
      >>> generate_response('What is the price?', {'What is XYZ?': 'XYZ is a company that provides XYZ services.'})
      'I am not sure I understand.'
      """
output:     if question in answers:
          return answers[question]
      else:
          return 'I am not sure I understand.'