Two people playing on a snowy hill.
The two people are related.
Not all two people are related.
exists e1 s1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & n_hill(x3) & a_snowy(s1) & Theme(s1,x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1.(n_people(x1) & card_eq_2(x1) & Theme(e1,x1) & v_relate(e1))