A large, tan dog is rolling in green grass.
A black cat walks across the grass.
A tan dog and a black cat are two different animals.
exists e1 s1 s2 s3 s4 x1 x2.(in(e1,x2) & n_grass(x2) & a_green(s4) & Theme(s4,x2) & Actor(e1,x1) & v_roll(e1) & n_dog(x1) & a_tan(s3) & Theme(s3,x1) & a_,(s2) & Theme(s2,x1) & a_large(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_grass(x2) & across(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_cat(x1) & a_black(s1) & Theme(s1,x1))