You will be given a definition of a task first, then some input 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: The film opens with a montage of images of Manhattan and other parts of New York City accompanied by George Gershwin's Rhapsody in Blue, with Isaac Davis narrating drafts of an introduction to a book about a man who loves the city. Isaac is a twice-divorced, 42-year-old television comedy writer who quits his unfulfilling job. He is dating Tracy, a 17-year-old girl attending the Dalton School. His best friend, college professor Yale Pollack, married to Emily, is having an affair with Mary Wilkie. Mary's ex-husband and former teacher, Jeremiah, also appears, and Isaac's ex-wife Jill Davis is writing a confessional book about their marriage. Jill has also since come out as a lesbian and lives with her partner, Connie.
When Isaac meets Mary, her cultural snobbery rubs him the wrong way. Isaac runs into her again at an Equal Rights Amendment fund-raising event at the Museum of Modern Art hosted by Bella Abzug (playing herself) and accompanies her on a cab ride home. They chat until sunrise in a sequence that culminates in the iconic shot of the Queensboro Bridge. In spite of a growing attraction to Mary, Isaac continues his relationship with Tracy but emphasizes that theirs cannot be a serious relationship and encourages her to go to London to study acting. In another iconic scene, at Tracy's request, they go on a carriage ride through Central Park.
Output:
What is the last name of the person who was divorced twice?