input: Write a function to crawl a website for a specific type of data. The function should take the website URL and the data type to crawl as inputs, and return the extracted data.
  
  def crawl_website_for_data(website, data_type):
      if data_type == 'phone numbers':
          response = requests.get(website)
          phone_numbers = re.findall('\d{3}-\d{3}-\d{4}', response.text)
          return phone_numbers
      return []
      
  if __name__ == '__main__':
      print(crawl_website_for_data('www.example.com', 'phone numbers'))
output: def crawl_website_for_data(website, data_type):
      if data_type == 'phone numbers':
          response = requests.get(website)
          phone_numbers = re.findall('\d{3}-\d{3}-\d{4}', response.text)
          return phone_numbers
      return []