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