title: Basketball (ball)
context: Nearly all basketballs have an inflatable inner rubber bladder, generally wrapped in layers of fiber and then covered with a  surface made either from leather (traditional), rubber, or a synthetic composite. As in most inflatable balls, there is a small opening that allows the pressure to be increased or decreased.
question: What are basketball's made out of?
answers: layers of fiber and then covered with a  surface made either from leather (traditional), rubber, or a synthetic composite