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: On a farm, a mama duck goes out for a swim, leaving behind an egg in her nest. Tom hides in the tall grass nearby and snatches the egg once mama duck is out of sight. He rushes back to the kitchen and cracks the egg over a frying pan, but instead of the albumen and yolk, Quacker the duckling appears. Not to be put off, Tom decides he will cook roasted duck instead. 
Tom feeds Quacker on plenty of bread to fatten him up, and then attempts to use a meat cleaver on him. Quacker avoids the meat cleaver, which slices through the remaining loaf of bread, and escapes to Jerry's mouse hole and informs a confused Jerry of Tom's actions. Jerry peers out from his mouse hole cautiously, but Tom quickly strikes with his meat cleaver. Quacker pulls Jerry's legs, thinking at first that the mouse has been decapitated but eventually realizing the cat has only caught Jerry's whiskers. Once free, Jerry pulls Tom's tail through a wall socket and out of the hole, causing Tom to reflexively hack the meat cleaver onto his own tail. The cat screams in pain as Jerry and Quacker escape the hole.
Solution:
Where does Tom find Quacker?