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: The film focuses on the cast and crew of a new TV series called Manhattan, which is shot on location in New York City. Mel Wexler is a successful producer who has become a workaholic since the death of his family in a plane crash. Trying to forget his loss, he throws himself on producing Manhattan. For the lead role, he tries to cast the feared film star Sabina Quarles, who has a reputation of being hard to work with. She initially declines, explaining she is too good for television. However, because of her past with Mel, she finally accepts the role. They soon start a relationship, but he remains suspicious of her constant visits to San Francisco. She is reluctant to explain why she is going there every month, which makes him think she has an affair.
Meanwhile, playing her stepson in the series is Bill Warwick, an actor who is a sex symbol. He is married to Sandy, but because of his image, he has to keep their marriage a secret. Sandy was once a great actress, but her drug addiction has turned her into a street prostitute, ignoring her work. He thinks a co-starring role could help her going towards the right path, but she fails to show up at her audition. The role eventually goes to Gaby Smith, a rich actress who graduated from Yale. From the very beginning, Bill is upset that his wife wasn't given the role and as a result, treats Gaby very badly. This makes her very sad, constantly trying to win his trust over.
Student:
What does Sandy do to make Bill keep their marriage secret?