A prequel is a work that portrays events which include the structure, conventions, and/or characters of a previously completed narrative, but occur at an earlier time. The word is a neologism, dating to the early 1970s; its first known, traceable use is in the original press pack for The Godfather Part II,http://www.amazon.co.uk/gp/product/0753507552/026-6461270-1692445?v=glance&n=266239 where it is used to describe the sections of the film which take place before the events of The Godfather. Francis Ford Coppola credits George Lucas with devising the term which Lucas and Steven Spielberg later used to describe their joint project Indiana Jones and the Temple of Doom during publicity for its release.