input: def generate_response(question: str) -> str:
      """ Generate a response to a question about a product or service using a predefined set of answers.
      If the question is not in the predefined answers, a random response is generated.
      >>> generate_response('What is XYZ?')
      'XYZ is a company that provides XYZ services.'
      >>> generate_response('What does ABC do?')
      'I am not sure I understand.'
      """
output:     predefined_answers = {
          'What is XYZ?': 'XYZ is a company that provides XYZ services.',
          'What does ABC do?': 'ABC specializes in providing ABC solutions.'
      }
      
      if question in predefined_answers:
          return predefined_answers[question]
      else:
          import random
          random_responses = [
              "I am not sure I understand.",
              "Could you please clarify your question?",
              "I don't have the information for that question."
          ]
          return random.choice(random_responses)