A woman is holding a child.
The woman dropped the child.
If the woman dropped the child, she is not holding the child.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_child(x2) & n_woman(x1))
exists e1 x1 x2.(n_child(x2) & n_woman(x1) & Theme(e1,x2) & Actor(e1,x1) & v_drop(e1))