Complex sentence: In May 2008, Time's Karen Tumulty wrote that Penn thought the Democratic primaries were "winner-take-all", rather than alloted proportionally, citing anonymous sources who attended a Clinton strategy session with Penn in 2007.
Split into simpler sentences: In May 2008, Time's Karen Tumulty suggested that Penn thought the Democratic primaries were "winner-take-all", rather than alloted proportionally. In her story, she cited anonymous sources who attended a Clinton strategy session with Penn in 2007.