Task: Question Generation
Input (English): Passage: Andy Kaufman is a struggling performer whose act fails in nightclubs because, while the audience wants comedy, he sings children's songs and refuses to tell conventional jokes. As the audience begins to believe that Kaufman may have no real talent, his previously timid "foreign man" character puts on a rhinestone jacket and does a dead-on Elvis impersonation. The audience bursts into applause, realizing Kaufman had tricked them.
He catches the eye of talent agent George Shapiro, who signs Kaufman as a client and immediately lands him a network TV series, Taxi, much to Kaufman's dismay, since he dislikes sitcoms. Because of the money, visibility, and a promise that he can do his own television special, Kaufman accepts the role, turning his foreign man into a mechanic named Latka Gravas. Secretly he hates doing the show and expresses a desire to quit.
Invited to catch a different act at a nightclub, Shapiro witnesses a performance by a rude, loud-mouthed lounge singer, Tony Clifton, whom Kaufman wants to guest-star on Taxi. Clifton's bad attitude is matched by his horrible appearance and demeanor. But backstage, when he meets Shapiro in person, Clifton takes off his sunglasses and reveals that he is actually Kaufman. Clifton is a "villain character" created by Kaufman and his creative partner, Bob Zmuda. Once again, the gag is on the audience.
Kaufman's profile increases with appearances on Saturday Night Live, but he has problems with his newfound fame. When performing live, audiences dislike his strange anti-humor and demand that he perform as Latka. At one show, he deliberately antagonizes attendees by reading The Great Gatsby aloud from start to finish. Kaufman shows up on the Taxi set as Clifton and proceeds to cause chaos until he is removed from the studio lot. He relates to Shapiro that he never knows exactly how to entertain an audience "short of faking my own death or setting the theater on fire.".
Output (English): What is the last name of the person who sings children's songs?