The baby pinches the woman's cheek.
the baby pinched a woman.
Pinched is a synonym of pinches, and "pinched a woman" is a rephrasing of "pinches the woman's cheek".
exists e1 x1 x2 x3.(n_cheek(x3) & of(x3,x2) & n_woman(x2) & n_baby(x1) & Theme(e1,x3) & Actor(e1,x1) & v_pinch(e1))
exists e1 x1 x2.(n_baby(x1) & Theme(e1,x2) & Actor(e1,x1) & v_pinch(e1) & n_woman(x2))