A black and white dog is playing with a white ball.
Puppets have a string.
When a dog is playing with a ball it may not simultaneously have a ball.
exists e1 s1 s2 s3 x1 x2.(with(e1,x2) & n_ball(x2) & a_white(s3) & Theme(s3,x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & a_white(s2) & Theme(s2,x1) & a_black(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_string(x2) & n_puppet(x1))