A black dog standing in some grass holding a white plastic item in its mouth.
a black dog plays fetch at the beach
A dog that is standing in some grass cannot be on the beach at the same time playing a game of fetch.
exists e1 s1 s2 x1 x2 x3 x4 x5 x6 x7.(a_topic(x1) & in(x1,x3) & in(e1,x7) & n_mouth(x7) & of(x7,x1) & n_thing(x1) & Theme(e1,x5) & Actor(e1,x4) & v_hold(e1) & n_item(x5) & of(x5,x6) & n_plastic(x6) & a_white(s2) & Theme(s2,x5) & (x3 = x4) & n_grass(x3) & n_standing(x1) & of(x1,x2) & n_dog(x2) & a_black(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(n_beach(x3) & at(e1,x3) & Actor(e1,x1) & v_fetch(e1) & n_play(x1) & of(x1,x2) & n_dog(x2) & a_black(s1) & Theme(s1,x1))