input: Write a function that creates a chatbot in Python to answer simple queries about a product or service. The chatbot will store predefined responses to certain questions, and if a question is not recognized, it will randomly respond with a message indicating its inability to understand. The chatbot will continue to interact with the user until the user types 'Goodbye'.
  
  import random
  
  # Predefined responses
  answers = {
      'What is XYZ?': 'XYZ is a company that provides XYZ services.',
      'What does XYZ do?': 'XYZ helps customers find solutions to their problems.',
      'Where is XYZ located?': 'XYZ is located in ABC city.',
      'What are the benefits of using XYZ?': 'XYZ provides a quick and easy way to find solutions to your problems.'
  }
  
  def generate_response(question):
      if question in answers:
          return answers[question]
      else:
          return random.choice(['I am not sure I understand.', 'Can you give me more information?', 'Can I help you with something else?'])
  
  # Test cases
  assert generate_response('What is XYZ?') == 'XYZ is a company that provides XYZ services.'
  assert generate_response('Where is XYZ located?') == 'XYZ is located in ABC city.'
  assert generate_response('Unknown question') in ['I am not sure I understand.', 'Can you give me more information?', 'Can I help you with something else?']
  assert generate_response('What does XYZ do?') == 'XYZ helps customers find solutions to their problems.'
  assert generate_response('') in ['I am not sure I understand.', 'Can you give me more information?', 'Can I help you with something else?']
  
output: def chatbot():
      while True:
          user_input = input("You: ")
          if user_input == 'Goodbye':
              break
          response = generate_response(user_input)
          print("Bot:", response)