Question: What is the date of birth of the composer of film William Shatner'S Gonzo Ballet?
Sentence (from "William Shatner's Gonzo Ballet"): William Shatner's Gonzo Ballet is a feature-length documentary film about a ballet by Margo Sappington called "Common People", which was set to the music of William Shatner and Ben Folds from their album
Relevant evidence: Yes