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: In Hollywood, director Fred Amiel, movie star Georgia Lorrison, and screenwriter James Lee Bartlow each refuse to speak by phone to Jonathan Shields in Paris. Movie producer Harry Pebbel gathers them in his office and explains that Shields was calling them because he has a new film idea and he wants the three of them for the project.  Shields cannot get financing on his own, but with their names attached, there would be no problem.  Pebbel asks the three to allow him to get Shields on the phone before they give their final answer.
As they await Shields' call, Pebbel assures the three that he understands why they refused to speak to Shields.  The backstory of their involvement with Shields then unfolds in a series of flashbacks. Shields is the son of a notorious former studio head who had been dumped by the industry. The elder Shields was so unpopular that his son had to hire "extras" to attend his funeral.  Despite the industry's ill feelings toward him because of his father, the younger Shields is determined to make it in Hollywood by any means necessary.
Shields partners with aspiring director Amiel, whom he meets at his father's funeral. Shields intentionally loses money he does not have in a poker game to film executive Pebbel, so he can talk Pebbel into letting him work off the debt as a line producer. Shields and Amiel learn their respective trades making B movies for Pebbel. When one of their films becomes a hit, Amiel decides they are ready to take on a more significant project he has been nursing along, and Shields pitches it to the studio. Shields gets a $1 million budget to produce the film, but betrays Amiel by allowing someone with an established reputation to be chosen as director.  The film's success allows Shields to start his own studio, and Pebbel comes to work for him there.  Amiel, now independent of Shields, goes on to become an Oscar-winning director in his own right.
What is the last name of the person who becomes a Oscar-winning director in his own right?