premise1: Two mountain bikers stand behind a large dirt hill while another biker performs an acrobatic trick in midair.
premise2: Three people on bikes on a dirty hill, one is in the air.
premise3: Bikers enjoying the landscape in the desert.
premise4: A person gets air on a bike.
premise: Two mountain bikers stand behind a large dirt hill while another biker performs an acrobatic trick in midair. Three people on bikes on a dirty hill, one is in the air. Bikers enjoying the landscape in the desert. A person gets air on a bike.
hypothesis: Two boys watching another boy.