Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following 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.
Solution: Who believes Fagin's gang make wallets and handkerchiefs?.
Reason: 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.

Now, solve this instance: Passage: Celia Amonte is a Portuguese American widow who lives in New Bedford, Massachusetts with her daughter Vicky; her late husband was a fisherman lost at sea. Vicky sneaks out of the house to go to a casino, where she meets Charlie Beck, a British card counter, and attempts to convince him to teach her his trade. Charlie is apprehended by the casino staff, and told that he can either work to find other card counters, or be banned from the casino. After accepting a ban, Charlie meets with his friends Daniel and Lois Vargas at the Shawmut Diner, where they attempt to convince him to stop card counting. Charlie go to a Portuguese restaurant with Daniel and Lois, and becomes interested in Celia after seeing her sing fado. He repeatedly tries to date Celie, and is rebuffed. Charlie later finds Celia's address in the phone book and goes to her house, where he encounters Vicky. Vicky agrees to help Charlie pursue her mother in exchange for card counting lessons, and threatens to reveal his identity as a gambler should he refuse.
Student:
What is the first name of the person who's identity the widow's daughter threatens to reveal?