A black and white dog is playing with a ball on a lawn.
A black and white dogs play on the grass with a ball that was thrown to him.
the fact that the dog is playing with a ball does not imply that the ball was thrown to him.
exists e1 s1 s2 x1 x2 x3.(with(e1,x2) & on(x2,x3) & n_lawn(x3) & n_ball(x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & a_white(s2) & Theme(s2,x1) & a_black(s1) & Theme(s1,x1))
exists e1 e2 s1 s2 x1 x2 x3 x4.(n_male(x2) & n_grass(x2) & with(e1,x3) & to(e2,x2) & Theme(e2,x4) & v_throw(e2) & (x3 = x4) & n_ball(x3) & on(e1,x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & a_white(s2) & Theme(s2,x1) & a_black(s1) & Theme(s1,x1))