Question: The Threepenny Opera (Die Dreigroschenoper ) is a "play with music" by Bertolt Brecht and Elisabeth Hauptmann, adapted from which of John Gay's English ballad opera in three acts, written in 1728?
Sentence (from "The Threepenny Opera"): Although Hauptmann produced 80 to 90 percent of the text, Brecht suppressed this and assumed sole credit, and is usually listed as sole author in printed versions.
Relevant evidence: No