[
    {
        "start_time": 0.0,
        "end_time": 1.0,
        "whole_body": "The person is walking forward on a cobblestone-patterned sidewalk, taking a steady step with their left leg.",
        "hands": "The person's right hand is raised to chest height, holding a smartphone, while their left hand hangs naturally at their side.",
        "face": "The person's head is tilted downward, and their eyes are focused on the screen of the smartphone."
    },
    {
        "start_time": 1.0,
        "end_time": 2.0,
        "whole_body": "The person continues their forward motion towards the camera, transitioning their weight to the right leg and bringing the left leg forward again.",
        "hands": "The right hand remains in place, continuing to hold the phone, while the left arm begins a gentle forward swing to counter the leg movement.",
        "face": "The person maintains their downward-facing posture, keeping their attention on the mobile device while walking."
    }
]