input: def generate_response(question: str) -> str:
      """Generates a response for the given question about a product or service. 
      The function uses a predefined dictionary of answers for known questions. 
      If the question is not in the dictionary, it returns a randomly selected 
      default response.
      >>> generate_response('What is XYZ?')
      'XYZ is a company that provides XYZ services.'
      >>> generate_response('Where is XYZ located?')
      'XYZ is located in ABC city.'
      >>> generate_response('What is the weather today?')
      'I am not sure I understand.'
      """
output:     responses = {
          'What is XYZ?': 'XYZ is a company that provides XYZ services.',
          'Where is XYZ located?': 'XYZ is located in ABC city.',
          'How does XYZ work?': 'XYZ works by using advanced technology to deliver its services.'
      }
      default_responses = [
          'I am not sure I understand.',
          'Could you please rephrase your question?',
          'I do not have the information for that question.'
      ]
      
      return responses.get(question, random.choice(default_responses))