A bee sits on a flower.
A bee is touching a flower.
A bee who sits on a flower is touching it.
exists e1 x1 x2.(on(e1,x2) & n_flower(x2) & Actor(e1,x1) & v_sit(e1) & n_bee(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_touch(e1) & n_flower(x2) & n_bee(x1))