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: At 09:30 on 2 May, Oan appeared at the first-floor window of the embassy to demand access to the telex system, which the police had disabled along with the telephone lines, and threatened to kill Abdul Fazi Ezzati, the cultural attaché. The police refused and Oan pushed Ezzati, who he had been holding at gunpoint at the window, across the room, before demanding to speak to somebody from the BBC who knew Sim Harris. The police, relieved to have a demand to which they could easily agree, produced Tony Crabb, managing director of BBC Television News and Harris's boss. Oan shouted his demands; for safe passage out of the UK, to be negotiated by three ambassadors from Arab countries, to Crabb from the first-floor window, and instructed that they should be broadcast along with a statement of the hostage-takers' aims by the BBC. The Foreign and Commonwealth Office informally approached the embassies of Algeria, Jordan, Kuwait, Lebanon, Syria and Qatar to ask if their ambassadors would be willing to talk to the hostage-takers. The Jordanian ambassador immediately refused and the other five said they would consult their governments. The BBC broadcast the statement that evening, but in a form unsatisfactory to Oan, who considered it to be truncated and incorrect.Meanwhile, the police located the embassy caretaker and took him to their forward headquarters to brief the SAS and senior police officers. He informed them that the embassy's front door was reinforced by a steel security door, and that the windows on the ground floor and first floor were fitted with armoured glass, the result of recommendations made after the SAS had been asked to review security arrangements for the embassy several years earlier. Plans for entering the embassy by battering the front door and ground-floor windows were quickly scrapped and work began on other ideas.
Student:
What is the last name of the person who held Ezzati at gunpoint?