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: Peter Denver is a renowned Broadway producer attending a party — hosted by the viciously haughty and celebrated actress Carlotta "Lottie" Marin and her quiet husband Brian Mullen — when he meets Nancy "Nanny" Ordway. Ordway is a seemingly naïve, 20-year-old, aspiring writer, who hopes to make it big in New York. She convinces a reluctant Denver to let her use his apartment to work during the day, while his wife, Iris, also a famous actress, is away, but with her permission. After the Denvers return from the airport and find Nancy hanging dead in their bathroom, a variety of people Ordway has recently met in New York begin to reveal deeper and darker connections with her. Lt. Bruce, the detective assigned to the case, soon discovers that this apparent suicide was in fact a homicide and believes that Denver, who is suspected of having an affair with Ordway, is the murderer. Denver evades arrest and seeks clues to discover the real murderer. The case becomes cluttered when he and Lt. Bruce independently realize that Ordway's dealings in New York were not as innocent as her superficial personality.
Solution:
What is the last name of the person who met Nancy at a party?