input: Write a python function to scrape review titles and summaries from a given URL using requests and BeautifulSoup.
  assert get_reviews("https://www.example.com/reviews") == (['Review Title 1', 'Review Title 2'], ['Summary of review 1', 'Summary of review 2'])
  assert get_reviews("https://www.example.com/other-reviews") == (['Another Review Title'], ['Summary of another review'])
  assert get_reviews("https://www.example.com/no-reviews") == ([], [])
output: def get_reviews(url):
      import requests
      from bs4 import BeautifulSoup
  
      response = requests.get(url)
      soup = BeautifulSoup(response.text, 'html.parser')
  
      titles = [title.get_text() for title in soup.find_all('h2', class_='review-title')]
      summaries = [summary.get_text() for summary in soup.find_all('p', class_='review-summary')]
  
      return titles, summaries