Example: The student is using the thumb on the helping hand to slightly push the ball.
(The student; is using; the thumb; on the helping hand) Context(The student is using,List([9, 29))):(The student; is using the thumb to slightly push; the ball)
The student is using,List([9, 29))
The student The student
is using is using the thumb to slightly push
the thumb on the helping hand
the ball