Two black dogs playing tug-of-war.
Two littermates play tug-of-war with their favorite chew toy
The black dogs do not have to be littermates and playing tug-of-war does not imply a specific toy.
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_tug-of-war(x3) & (x1 = x2) & n_dog(x1) & a_black(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e2 e1 s1 x1 x2 x3 x4.(Theme(e2,x4) & Actor(e2,x1) & v_chew(e2) & n_toy(x4) & a_tug-of-war(s1) & Manner(e1,s1) & with(e1,x3) & n_favorite(x3) & of(x3,x1) & n_thing(x1) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_littermate(x1) & card_eq_2(x1))