document: {"document":{"title":"na","text":"Released: April 2015","paragraphs":null,"sentences":null,"tokens":["Released",":","April","2015"],"language":null},"tags":[{"tag":"O","start":0,"end":8,"comment":null},{"tag":"O","start":8,"end":9,"comment":null},{"tag":"O","start":10,"end":15,"comment":null},{"tag":"O","start":16,"end":20,"comment":null}]}