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"): The Hitchhiker's Guide to the Galaxy (sometimes referred to as HG2G, HHGTTG or H2G2) is a comedy science fiction series created by Douglas Adams.
Relevant evidence: No