A brown and white pitbull runs through the grass with a stick in its mouth.
A dog is on the couch.
The dog can't be on the couch at the same time as he runs through the grass.
exists e1 s1 s2 x1 x2 x3 x4.(n_mouth(x4) & of(x4,x2) & n_thing(x2) & n_grass(x2) & with(e1,x3) & in(x3,x4) & n_stick(x3) & through(e1,x2) & Actor(e1,x1) & v_run(e1) & n_pitbull(x1) & a_white(s2) & Theme(s2,x1) & a_brown(s1) & Theme(s1,x1))
exists p1 x1 x2.(n_couch(x2) & on(x1,x2) & n_dog(x1))