input: from typing import List
  
  
  def extract_urls(urls: List[str]) -> List[str]:
      """ Create a web scraper that extracts specific data from a given website.
      The web scraper should utilize the Python package BeautifulSoup to parse webpages and extract the required data.
      For example, to extract the URL from a list of webpages, the following code snippet can be used:
  
      import requests
      from bs4 import BeautifulSoup
  
      # Get the web page
      webpage = requests.get("<url_of_webpage>")
  
      # Parse the web page
      soup = BeautifulSoup(webpage.content, 'html.parser')
  
      # Find all 'a' tags
      links = soup.find_all('a')
  
      # Extract the URLs in the 'href' attribute
      urls = [link.get('href') for link in links]
      print(urls)
      >>> extract_urls(["<url_of_webpage>"])
      ['http://example.com', 'http://another-example.com']
      """
output:     import requests
      from bs4 import BeautifulSoup
  
      extracted_urls = []
      for url in urls:
          webpage = requests.get(url)
          soup = BeautifulSoup(webpage.content, 'html.parser')
          links = soup.find_all('a')
          extracted_urls.extend([link.get('href') for link in links if link.get('href')])
      
      return extracted_urls