Two big black dogs play with each other in the grass.
Animals playing.
Dogs are animals, so it makes sense that they would be animals playing.
exists e1 s1 s2 x1 x2.(n_grass(x2) & in(e1,x2) & all x3.(n_other(x3) -> with(e1,x3)) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & a_black(s2) & Theme(s2,x1) & a_big(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 x1.(Actor(e1,x1) & v_play(e1) & n_animal(x1))