[
    {
        "start_time": 0.0,
        "end_time": 2.5,
        "whole_body": "The person is walking at a steady pace from right to left across a sidewalk in front of a white building, wearing a black hooded jacket and a shoulder bag.",
        "hands": "The person's hands are held together in front of their chest, holding and interacting with a smartphone as they walk.",
        "face": "The person's head is tilted downward, focusing their gaze on the screen of the smartphone in their hands."
    }
]