Two black and two white dogs are playing in the snow.
Four dogs are playing with snow flakes.
Playing in snow doesn't imply playing with snow flakes
exists e1 s1 s2 x1 x2.(n_snow(x2) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & a_white(s2) & Theme(s2,x1) & card_eq_2(x1) & card_eq_2(x1) & a_black(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(with(e1,x2) & n_flake(x2) & of(x2,x3) & n_snow(x3) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & card_eq_4(x1))