a hand writing on a piece of paper.

a person sitting at a desk with a white sheet of paper and a black pen. the person writes on the paper using the black pen. at 0.0 seconds, the person holds the pen and paper. at 0.5 seconds, the person starts writing on the paper with the black pen. at 1.0 seconds, the person continues writing with the black pen. at 1.5 seconds, the person finishes writing with the black pen. at 2.1 seconds, the person puts the pen down. at 2.6 seconds, the person picks up the pen again. at 3.2 seconds, the person finishes writing with the black pen. at 3.7 seconds, the person puts the pen down again. overall, a person writing on a white sheet of paper using a black pen.