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: 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.
What is the last name of the person who met Nancy at a party?