Complex sentence: The first batch of documents was publish by WikiLeaks on 7 March 2017, consisting of 7,818 web pages with 943 attachments, purportedly from the Center for Cyber Intelligence, which already contains more pages than former NSA contractor and leaker, Edward Snowden's NSA release.
Split into simpler sentences: The first batch of documents was publish by WikiLeaks on 7 March 2017. Which consist of 7,818 web pages with 943 attachments, purportedly from the Center for Cyber Intelligence, which already contains more pages than former NSA contractor and leaker, Edward Snowden's NSA release.