premise1: A young man with his back to the camera is being watched by youths sitting at two picnic tables before a backdrop of grass and trees.
premise2: A teenage boy in a white shirt is speaking to a group of teenagers who are sitting at picnic tables in front of a park.
premise3: The man is gesturing towards the young adults who are sitting on park benches in front of a landscaped background.
premise4: A man talks to a group of people who are sitting on picnic tables.
premise: A young man with his back to the camera is being watched by youths sitting at two picnic tables before a backdrop of grass and trees. A teenage boy in a white shirt is speaking to a group of teenagers who are sitting at picnic tables in front of a park. The man is gesturing towards the young adults who are sitting on park benches in front of a landscaped background. A man talks to a group of people who are sitting on picnic tables.
hypothesis: A guy skateboarding.