Two people are hugging on a couch.
young lovers hug
Not all people are lovers.
exists e1 x1 x2.(on(e1,x2) & n_couch(x2) & Actor(e1,x1) & v_hug(e1) & n_people(x1) & card_eq_2(x1))
exists s1 x1 x2.(n_hug(x1) & of(x1,x2) & n_lover(x2) & a_young(s1) & Theme(s1,x1) & a_topic(x1))