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: The film opens in the year 1958, where steel heiress Edna Buxton enters a talent contest. Her overbearing mother is at odds with her, arguing that Edna should choose a specific song and wardrobe for the contest. At the contest, Edna swaps dresses with a blue singer named Doris, and even changes her song at the last minute, infuriating her mother, who leaves before seeing Edna win the competition.
An excited Edna decides to use her grand prize winnings to record a demo. The studio producer tactfully delivers the painful truth to Edna that not only are girl singers not getting signed, the record companies are trying to get rid of the ones currently on their rosters. However, when Edna tells him that she wrote the song, he is impressed enough to direct her to Joel Milner who takes her under his wing, renames her "Denise Waverly" and invents a blue-collar persona for her. Milner reworks her song for a male doo-wop group, the Stylettes, as male solo artists are groups are far more marketable. The song becomes a hit.
Denise (formerly Edna) moves to New York City and becomes a songwriter in the Brill Building. At a party, she meets the arrogant songwriter Howard Caszatt, and despite an awkward initial meeting they become romantically involved. She also reunites with Doris. Denise offers to and writes a song specifically for Doris and her two girlfriends, persuading Milner to audition and hire the group. 
In 1965, Howard and Denise begin writing together; they pen a song called "Unwanted Number," based on a young girl's unwanted pregnancy.  Although it is banned, it attracts the attention of prominent and influential disc jockey John Murray who, despite the negative attention of the song, credits Denise with sparking the craze for girl groups.
Solution:
What is the full name of the person that changes their song last minute?