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.

Example input: 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.
Example output: Who believes Fagin's gang make wallets and handkerchiefs?.
Example explanation: 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.
Q: Passage: Nisa is a native princess of a northern Brazilian tribe who comes to Los Angeles to stop an American corporation from destroying her rainforest home. With her is tribal shaman Joa, who uses black magic to get past the company guards and see the chairman of the corporation, resulting in his arrest.
Left to fend for herself in Los Angeles alone, Nisa, with the help of Carmen, finds work in a Beverly Hills mansion as the servant of an uptight couple whose son, Jason, lives only to dance. After spying on Nisa as she dances provocatively in her bedroom, Jason takes her out to a club. She is rejected by Jason's friends, and he is berated by his parents for dating the help.
Nisa runs away and gets a job at Xtasy, a sleazy dance joint/brothel, as a dance partner for male customers. Jason's friends visits the club and want to dance with Nisa, but Nisa refuses to dance with them. One of Jason's friends becomes sleazy towards her and she knees him in the groin. Later, the friends tell Ashley, Jason's girlfriend, and she runs back and tells Jason his little girlfriend is a sleaze working at Xtasy. He becomes morose, turns away from his buddies and girlfriend Ashley and goes to Xtasy to try to take Nisa out of the place. A bouncer beats up the would-be rescuer and prepares to deflower Nisa, but Joa walks in and magically stuns the attacker, which clears the place.
The shaman then heads back to the tribe, while Nisa and Jason, now in love, prepare for a dance contest, hoping to speak out about the plight of the rainforest when they are showcased on TV.
They win the contest, but the corporation's head stooge, Benjamin Maxwell, kidnaps Nisa afterwards. Jason finds them and helps Nisa to escape but twists his ankle, ruining their chances of performing on the show.
A:
Who knees one of Jason's friends in the groin?