input: Write a python function to extract title, h1, and description from a webpage and save them in a JSON file.
  assert extract_and_save_information('http://example.com/') == 'Data saved!'
  assert extract_and_save_information('http://example.org/') == 'Data saved!'
output: def extract_and_save_information(url):
      import requests
      from bs4 import BeautifulSoup
      import json
  
      response = requests.get(url)
      soup = BeautifulSoup(response.content, 'html.parser')
  
      title = soup.title.string if soup.title else ''
      h1 = soup.h1.string if soup.h1 else ''
      description = ''
      if soup.find('meta', attrs={'name': 'description'}):
          description = soup.find('meta', attrs={'name': 'description'})['content']
  
      data = {
          'title': title,
          'h1': h1,
          'description': description
      }
  
      with open('data.json', 'w') as json_file:
          json.dump(data, json_file)
  
      return 'Data saved!'