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.

Let me give you an 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.
The answer to this example can be: Who believes Fagin's gang make wallets and handkerchiefs?.
Here is 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.

OK. solve this:
Passage: On October 6, 1970, on holiday in Istanbul, Turkey, American college student Billy Hayes straps 2 kg of hashish blocks to his chest. While attempting to board a plane back to the United States with his girlfriend, Billy is arrested by Turkish police on high alert for fear of terrorist attacks. He is strip-searched, photographed, and questioned.
After a while, a shadowy American, who is never named but is nicknamed "Tex" by Billy for his thick Texan accent, arrives, takes Billy to a police station, and translates Billy's English for one of the detectives. Billy says that he bought the hashish from a taxicab driver and offers to help the police track him down in exchange for his release. Billy goes with the police to a nearby market and points out the cab driver, but when they go to arrest the cabbie, it becomes apparent that the police have no intention of keeping their end of the deal with Billy. He sees an opportunity and makes a run for it, only to get cornered and recaptured by the mysterious American.
During his first night in holding at a local jail, a freezing-cold Billy sneaks out of his cell and steals a blanket. Later that night, he is rousted from his cell and brutally beaten by chief guard Hamidou for the theft.
He wakes a few days later in Sağmalcılar Prison, surrounded by fellow Western prisoners Jimmy (an American who is in for stealing two candlesticks from a mosque), Max (an English heroin addict), and Erich (a Swede, also in for drug smuggling), who help him to his feet. Jimmy tells Billy that the prison is a dangerous place for foreigners like them and that no one can be trusted, even young children.
Answer:
What is the last name of the person that is helped to his feet?