The constraint is then no longer valid and the rule of gravity causes the ball to fall.
(The constraint; is no longer; valid; T:then) (the rule of gravity; causes; the ball to fall) Context(the rule of gravity causes,List([43, 69))):(the ball; to fall; )
the rule of gravity causes,List([43, 69))
The constraint the rule of gravity the ball
is no longer causes to fall
valid T:then
the ball to fall