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.
Q: Passage: Chris Emerson, a young former surfing pro and his younger sister Nicole move to Luna Bay, California, following the death of their parents, to live in a house owned by their aunt Jillian. Chris leaves his address at the home of Edgar Frog, the town's surfboard shaper, in hopes of getting a job. Chris is approached at their new home by former pro surfer, Shane Powers (played by Angus Sutherland the half brother of Kiefer Sutherland who played David from the original film), who invites him to a party that night.
Chris and Nicole go to the party, where Shane and his friends Kyle, Erik and Jon are entertaining themselves with the human guests. Chris showers with a girl named Lisa and Shane gets Nicole alone, chats with her for a bit, and then tricks her into drinking his blood. When Chris learns that Nicole has been with Shane, he angrily, and protectively, takes her home, where she begins to manifest vampiric strength and rage. But before Nicole kills Chris, she is knocked out by Edgar, who reveals that he is a vampire hunter, and Nicole has been infected with vampirism. Chris throws Edgar out of the house. Then, Lisa shows up and pretends to chat with Chris for a bit before she finally tries to seduce and feed on him. In fending her off, he accidentally impales her on a mounted rack of antlers, killing her explosively when she turns into stone and explodes.
Finally convinced of the situation, remembering what Edgar said and believing that he was right, Chris seeks out Edgar's help. Edgar explains that Nicole is only half-vampire, and will remain that way unless she feeds, and she can be turned human again if they kill the head vampire before that. Chris interrupts her just before she can feed on Evan Monroe, a nice guy who has been courting her, and explains what is happening to her, and Nicole is surprised at what she almost did (because she believes herself to be a vegetarian). However, Shane draws her to their lair and they have sex.
A:
Who turns into stone and explodes?