Extract the answer to the following question from the movie plot. If the question isn't answerable, please output "Can't answer". Question: Whose hands are nailed to a tree? Title: Nailgun Massacre Movie plot: At a construction site in east Texas, six men gang rape Linda Jenkins. Five months later, a person in camouflage clothing and black motorcycle helmet kills one of the rapists with a nail gun. One month later another rapist, Mark, cuts some wood with his friend Brad. As Brad urinates, the killer shoots him in the crotch and stomach. As Mark revs up the chainsaw, the killer sneaks up behind him and shoots him in the back of the neck. Mark falls and the chainsaw severs his hand. When Doc, the town doctor and coroner, arrives at the crime scene, the sheriff shows him the bodies. The doctor mentions that three bodies have been found on Old Lady Bailey's property. The sheriff asks the wife of the first murder victim if her husband was a carpenter, and he leaves to call the "meat wagon." The killer picks up a hitchhiker, then shoots him in the stomach, causing him to jump out of the moving vehicle. He then stops the car and kills the hitchhiker. The sheriff and Doc are called to the hardware store where a young woman was found nailed behind the store. Minutes later, they are called to the road outside of town where the hitchhiker was nailed to the concrete in the middle of the road. Maxine, John and Tom are eating at a diner where she reveals Old Bailey let them stay in a house for free because someone was murdered there. The next day, the trio buys lumber from the lumber yard to fix the house. Hal and Ben arrive with their girlfriends Ann and Trish, to ask the owner, Bubba, for a job. He tells them of Maxine's place and the group leaves. After they leave, Linda shows up and asks Bubba if the two men were construction workers. At Maxine's place, the group sees no one at home, and sit on a blanket for a picnic. Hal and Ann go for a walk in the woods and have sex. They are killed and nailed to a tree by the killer. Trish urges Ben to look for them. The killer nails Ben's hands to a tree. Maxine, John and Tom returns to the house. John comforts a frightened Trish. John and Tom discover the Hal, Ben, and Ann's bodies...
A:
Ben's