code: def title_prefix(soup):
      "titlePrefix for article JSON is only articles with certain display_channel values"
      prefix = None
      display_channel_match_list = ['feature article', 'insight', 'editorial']
      for d_channel in display_channel(soup):
          if d_channel.lower() in display_channel_match_list:
              if raw_parser.sub_display_channel(soup):
                  prefix = node_text(first(raw_parser.sub_display_channel(soup)))
      return prefif title_prefix(soup):
      "titlePrefix for article JSON is only articles with certain display_channel values"
      prefix = None
      display_channel_match_list = ['feature article', 'insight', 'editorial']
      for d_channel in display_channel(soup):
          if d_channel.lower() in display_channel_match_list:
              if raw_parser.sub_display_channel(soup):
                  prefix = node_text(first(raw_parser.sub_display_channel(soup)))
      return prefix
docs: titlePrefix for article JSON is only articles with certain display_channel values