A white dog runs on brown grass.
A dog runs on the grass.
Regardless of the color, the dog is running on the grass.
exists e1 s1 s2 x1 x2.(on(e1,x2) & n_grass(x2) & a_brown(s2) & Theme(s2,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & a_white(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_grass(x2) & on(e1,x2) & Actor(e1,x1) & v_run(e1) & n_dog(x1))