In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
Example: Passage: Nearing London, Oliver encounters Jack Dawkins, a pickpocket more commonly known by the nickname the "Artful Dodger", and his sidekick, a boy of a humorous nature named Charley Bates, but Oliver's innocent and trusting nature fails to see any dishonesty in their actions. The Dodger provides Oliver with a free meal and tells him of a gentleman in London who will "give him lodgings for nothing, and never ask for change". Grateful for the unexpected assistance, Oliver follows the Dodger to the "old gentleman's" residence. In this way Oliver unwittingly falls in with an infamous Jewish criminal known as Fagin, the gentleman of whom the Artful Dodger spoke. Ensnared, Oliver lives with Fagin and his gang of juvenile pickpockets in their lair at Saffron Hill for some time, unaware of their criminal occupations. He believes they make wallets and handkerchiefs.
Example solution: Who believes Fagin's gang make wallets and handkerchiefs?.
Example explanation: This question is based on the following sentence in the passage "He believes they make wallets and handkerchiefs". It evaluates the understanding that the pronoun "he" refers to name "Oliver". You can ask questions like this one about most pronouns in a paragraph.

Problem: Passage: The cartoon opens with a live action sequence of Cab Calloway and his orchestra performing an instrumental rendition of "St. James Infirmary". Then Betty Boop gets into a fight with her strict, Yiddish speaking, Jewish parents, and as a result, runs away from home with her boyfriend Bimbo, and sings excerpts of the Harry Von Tilzer song "They Always Pick on Me" (1911) and the song "Mean to Me" (1929).
Betty and Bimbo end up in a cave with a walrus, which has Cab Calloway's voice, who sings "Minnie the Moocher" and dances to the melancholy song. Calloway is joined in the performance by various ghosts, goblins, skeletons, and other frightening things. Betty and Bimbo are subjected to skeletons drinking at a bar; ghost prisoners sitting in electric chairs; a cat with empty eye-sockets feeding her equally empty-eyed kittens; and so on. Betty and Bimbo both change their minds about running away and rush back home with every ghost right behind them. Betty makes it safely back to her home and hides under the blankets of her bed. As she shakes in terror, the note she earlier wrote to her parents tears, leaving "Home Sweet Home" on it. The film ends with Calloway performing the instrumental "Vine Street Blues".
Solution: Who sings "Minnie the Moocher"?