[ { "start_time": 0.0, "end_time": 4.5, "whole_body": "The person is climbing a wide flight of stone stairs, seen from behind. They move with a steady, upward gait, alternating their feet as they ascend toward the top.", "hands": "The person's hands are kept low at their sides, with their arms moving slightly in a natural rhythm that complements their walking motion.", "face": "The person's head is oriented forward and slightly upward toward the top of the staircase, though their face is not visible as they are walking away from the camera." } ]