Please answer the following question: Please answer the following question about this movie plot. If it's un-answerable, please output "No answer". Question: The van belongs to a group of how many friends? Movie plot title: Mine Games Movie plot: A van arrives at a gas station, where a nearby newspaper announces an "unidentified girl found dead in forest". The van belongs to a group of seven friends Michael, Lyla, TJ, Claire, Lex, Rose, and Guy who are traveling to a mutual friend's cabin in the woods for a vacation. Michael, who is driving, gets lost in the dark and swerves to avoid a waving figure in the road. The van crashes, which forces them to travel on foot. They arrive at a well-furnished cabin where Rose finds a written note telling "TJ, Lex, Claire" to wait there for them, so they assume that this is the house. The group enjoys themselves in the comfortable cabin, with the exception of Michael, who sleeps early and has nightmares. The next morning, TJ discovers an abandoned mine nearby and takes the group inside to explore. TJ and Guy, as a joke, briefly lock Michael inside an enclosed cell, which causes him to panic. Rose, who is a psychic, is uneasy about the mine and at one point feels someone grab her leg, though it cannot be one of her friends. Michael and his girlfriend Lyla return to the van to collect Michael's anti-psychotic medication and confirm that the van is unusable. They find blood on the van's fender and assume that they hit an animal the previous night. Upon returning to the house, the group collectively agrees to stay one more day to wait for the owners of the house. Over the day, Rose has fits and visions of her friends in various stages of death and injury. While exploring the mines again, TJ and Lex discover three dead bodies that appear identical to theirs and Guy's. They inform the others, and the group reluctantly agrees that something supernatural is occurring. TJ and Lex return to the mine in search of answers and find a traumatized Claire locked inside a cell; she claims that it is Michael's doing. TJ and Lex refuse to save her, knowing that "their" Claire is still in the house, a decision that Claire later supports. Despite Lyla's protests, the others debate whether Michael needs to be locked up overnight...
Answer:
7