You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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.

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.
Solution: Who believes Fagin's gang make wallets and handkerchiefs?.
Why? 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.

New input: Passage: Mammy Two Shoes stumbles upon entering the kitchen, which has been ransacked by Jerry, and berates the residents of the house, Tom and Butch. She warns them that the one who catches Jerry can stay, and the other will be kicked out. The two cats frantically search for Jerry, eventually realizing they were both unsuspectingly aided by him. They scramble to catch the mouse, but become tangled. They tiptoe across the floor until Jerry hits one of their feet with a log.
Tom and Butch then grab Jerry together and decide to have a gun duel. Tom turns around early and shoots Butch, but finds out he has a novelty gun, allowing Butch to chase Tom into the wall. Tom sees the same brand name on it and assumes it is another novelty gun, but Butch shoots, with Tom barely dodging the bullet. Jerry then enters an oven. Tom and Butch slam the door and turn on the gas, but Jerry sneaks out, lights a match and drops it in the oven, leaving Tom and Butch in blackface.
Jerry is then caught by both cats simultaneously. Jerry squeezes out, but is grabbed by Butch. Tom grabs his tail as he flees and after Tom bops Butch on the head, Butch slips the mouse into a box before continuing the fight. Jerry escapes and rings a gong, ending the fight momentarily, and coaches Tom and Butch to hit each other. After Jerry rings the gong, both cats realise they have been tricked and glance towards Jerry. Realising he is trapped, the mouse chooses Butch via counting-out and sits down in his hand.
Solution:
Who has a novelty gun?