[
    {
        "start_time": 0.0,
        "end_time": 1.2,
        "whole_body": "The person enters the scene from the right, standing on a skateboard and rolling toward the left. They maintain a balanced, slightly crouched posture as they gain momentum.",
        "hands": "The arms are held slightly away from the body at waist level to help maintain balance while moving.",
        "face": "The head is turned toward the direction of travel, with the person looking ahead at the skate park environment."
    },
    {
        "start_time": 1.2,
        "end_time": 2.2,
        "whole_body": "The person approaches a concrete bench obstacle. They crouch lower, shifting their center of gravity to prepare for a jump.",
        "hands": "The hands move slightly lower and closer to the body, ready to swing upward for momentum.",
        "face": "The person's gaze is fixed steadily on the edge of the bench ahead of them."
    },
    {
        "start_time": 2.2,
        "end_time": 3.4,
        "whole_body": "The person performs an ollie, jumping into the air and landing the skateboard's trucks on the edge of the bench. They grind along the bench briefly before jumping off and landing on the ground, rolling away.",
        "hands": "The arms swing upward during the jump and then extend outward to the sides to stabilize the body during the grind and the final landing.",
        "face": "The head is tilted slightly downward, focused on the board and the landing point on the ground."
    }
]