A woman is grating cheese.
A woman is peeling onions.
She is either grating cheese or peeling onions. It is unlikely she is doing both at once.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_grate(e1) & n_cheese(x2) & n_woman(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_peel(e1) & n_onion(x2) & n_woman(x1))