Complex sentence: The second play (entitled "Edward IV") featured the second half of "2 Henry VI" and a shortened version of "3 Henry VI", which was followed by a shortened version of "Richard III" as the third play.
Split into simpler sentences: The second play (entitled "Edward IV") featured the second half of "2 Henry VI" and a shortened version of "3 Henry VI". This was followed by a shortened version of "Richard III" as the third play.