Two people and a dog are in the snow.
Two people have a dog.
The fact that two people are along with a dog implies they have a dog.
exists p1 x1 x2 x3 x4.(n_snow(x4) & in(x1,x4) & subset_of(x3,x1) & n_dog(x3) & subset_of(x2,x1) & n_people(x2) & card_eq_2(x2))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_dog(x2) & n_people(x1) & card_eq_2(x1))