Detailed Instructions: 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.
Problem:Passage: Elgin and David lead a promising dance crew in Los Angeles, California who participate in street dancing battles at a warehouse owned by a local club owner, Mr. Rad. The film opens up with their crew battling another crew led by Vick. Their crew defeats Vick's crew.
After the battle, David and Elgin go to another club to deliver drugs for a drug lord named Emerald in order to get money for the battles. Later on, David and Elgin are challenged by Wade, a rich kid from Orange County, for $5,000, they think it's easy money. After winning another battle, Wade and his best friend, Max meet Elgin at a park. Elgin tells them that his crew will battle their crew next Saturday night, but Wade and Max think that Elgin's crew are not good enough to battle them tonight. Furious, Elgin accepts their offer. He borrows money from his grandmother for the battle.
Due to the amount of money on the line, Mr. Rad announced that there will be no fighting during the battle and hires a bodyguard for insurance. Nonetheless a fight does breakout after David and Elgin realize that their opponent has stolen their dance set, due to crew member Sonny betraying the team to join Wade's. The crowd applauds Wade's crew but David and Elgin are furious that they have lost for the first time. Wade, crowing over his success, delivers the titular line, "You're just mad... 'cause tonight you suckaz got served!" Wade's crew takes over Mr. Rad's club and David and Elgin's crew leave furiously.
Solution:
What is the name of the person who  stole the dance set?