A snow plow is coming towards two people.
The snow plow is green.
Not all snow plows are green
exists e1 x1 x2 x3.(towards(e1,x3) & n_people(x3) & card_eq_2(x3) & Actor(e1,x1) & v_come(e1) & n_plow(x1) & of(x1,x2) & n_snow(x2))
exists s1 x1 x2.(n_plow(x1) & of(x1,x2) & n_snow(x2) & Theme(s1,x1) & a_green(s1))