A big tan dog runs on grass with a big stick in his mouth.
A dog is running on some grass.
A big tan dog runs on grass implies a dog running on some grass.
exists e1 s1 s2 s3 x1 x2 x3 x4.(with(e1,x3) & in(x3,x4) & n_mouth(x4) & of(x4,x1) & n_male(x1) & n_stick(x3) & a_big(s3) & Theme(s3,x3) & on(e1,x2) & n_grass(x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & a_tan(s2) & Theme(s2,x1) & a_big(s1) & Theme(s1,x1))
exists e1 x1 x2.(on(e1,x2) & n_grass(x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1))