Here, the human figure is throwing a football and, to learn proper technique while watching the video/succession of images, {TAIL ~ a viewer} can change {HEAD ~ the orientation} of the device to see different angles of the human figure to learn how to emulate the move 
Here , the human figure is throwing a football and , to learn proper technique while watching the video / succession of images , { TAIL ~ a viewer } can change { HEAD ~ the orientation } of the device to see different angles of the human figure to learn how to emulate the move
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