Two people are sleeping on a sofa.
Humans sleeping
People obviously are humans
exists e1 x1 x2.(on(e1,x2) & n_sofa(x2) & Actor(e1,x1) & v_sleep(e1) & n_people(x1) & card_eq_2(x1))
exists x1 x2.(n_sleeping(x1) & (x1 = x2) & ne_nam_humans(x2) & a_topic(x1))