[
    {
        "start_time": 0.0,
        "end_time": 0.7,
        "whole_body": "The person is standing and leaning forward slightly in front of the wood chipper's hopper.",
        "hands": "The hands are positioned at waist level, gripping a pile of branches and debris.",
        "face": "The person's head is tilted down, focusing on the material they are about to feed into the machine."
    },
    {
        "start_time": 0.7,
        "end_time": 1.5,
        "whole_body": "The person leans their entire torso forward, using their weight to assist in the pushing motion.",
        "hands": "Both hands extend forward to shove the debris into the intake of the wood chipper.",
        "face": "The head remains oriented towards the machine, following the movement of the hands."
    }
]