Question: Who was the author that penned the 6th installment of a trilogy that originated on BBC Radio 4 as a comedy broadcast in 1978?
Sentence (from "The Hitchhiker's Guide to the Galaxy"): A prominent series in British popular culture, "The Hitchhiker's Guide to the Galaxy" has become an international multi-media phenomenon; the novels are the most widely distributed, having been translated into more than 30 languages by 2005.
Relevant evidence: No