A large dog rubs its face in the grass.
A large dog is eating grass and rolling around in it.
Just because a dog rubs its face in the grass does not mean it is eating and rolling in it.
exists e1 s1 x1 x2 x3.(n_grass(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_rub(e1) & n_face(x2) & of(x2,x1) & n_thing(x1) & n_dog(x1) & a_large(s1) & Theme(s1,x1))
exists e1 e2 p1 s1 s2 x1 x2 x3.(in(e2,x1) & n_thing(x1) & exists s3.(Theme(s3,x3) & a_around(s3)) & Topic(e2,p1) & Actor(e2,x3) & v_roll(e2) & n_dog(x3) & a_large(s2) & Theme(s2,x3) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_grass(x2) & n_dog(x1) & a_large(s1) & Theme(s1,x1))