premise1: A man in a red shirt is doing a trick with his skateboard.
premise2: A skateboarder is performing a trick in the air.
premise3: A man wearing a red shirt is skateboarding.
premise4: Person doing a skateboard trick in midair.
premise: A man in a red shirt is doing a trick with his skateboard. A skateboarder is performing a trick in the air. A man wearing a red shirt is skateboarding. Person doing a skateboard trick in midair.
hypothesis: A skater jumps in the air.