A dog with long hair and a red vest runs in the grass.
The cat eats sand
A dog can not be a cat while an animal eats sand can not happen if an animal runs in the grass.
exists s1 s2 x1 x2 x3 x4 x5 x6.(n_grass(x6) & a_topic(x1) & with(x1,x2) & subset_of(x4,x2) & in(x4,x6) & n_run(x4) & of(x4,x5) & n_vest(x5) & a_red(s2) & Theme(s2,x4) & subset_of(x3,x2) & n_hair(x3) & a_long(s1) & Theme(s1,x3) & n_dog(x1))
exists e1 x1 x2.(n_cat(x1) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_sand(x2))