A woman is hugging a man.
Two people hugging.
a woman and a man are two people.
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_hug(e1) & n_man(x2) & n_woman(x1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_hug(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))