Two men and some horses on a snowy mountain.
The horses are standing on the snow.
horses on a snowy mountain can be reduced to horses in the snow
exists s1 s2 x1 x2 x3.(a_topic(s1) & subset_of(x2,s1) & on(x2,x3) & n_mountain(x3) & a_snowy(s2) & Theme(s2,x3) & n_horse(x2) & subset_of(x1,s1) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_snow(x2) & n_horse(x1) & on(e1,x2) & Actor(e1,x1) & v_stand(e1))