Two dogs play in field of snow
The dogs are playing together.
You can't assume they are playing together. They could be playing seperatly.
exists e1 x1 x2 x3.(in(e1,x2) & of(x2,x3) & n_snow(x3) & n_field(x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & card_eq_2(x1))
exists e1 s1 x1.(n_dog(x1) & a_together(s1) & Manner(e1,s1) & Actor(e1,x1) & v_play(e1))