code: def og_type(response, site_dict):
          
          og_type_article = response.xpath('//meta') \
              .re('(property=["\']og:type["\'].*content=["\']article["\'])|'
                  '(content=["\']article["\'].*property=["\']og:type["\'])')
          if not og_type_article:
              return False
  
          return True
docs: Check if the site contains a meta-tag which contains
          property="og:type" and content="article"
  
          :param obj response: The scrapy response
          :param dict site_dict: The site object from the JSON-File
  
          :return bool: True if the tag is contained.