input: def generate_response(question: str) -> str:
      """ A function that returns a response to a given query about a product or service.
      If the query is in a predefined list, it returns the associated answer; otherwise,
      it returns a random message indicating uncertainty.
      >>> generate_response('What is XYZ?')
      'XYZ is a company that provides XYZ services.'
      >>> generate_response('What does XYZ do?')
      'XYZ helps customers find solutions to their problems.'
      """
output:     predefined_responses = {
          'What is XYZ?': 'XYZ is a company that provides XYZ services.',
          'What does XYZ do?': 'XYZ helps customers find solutions to their problems.',
          'How does XYZ work?': 'XYZ works by using advanced algorithms to optimize processes.',
          'Who uses XYZ?': 'XYZ is used by professionals in various industries.'
      }
      
      return predefined_responses.get(question, 'I am not sure about that.')