Couple sleep on subway line sitting next to each other.
Two travelers in a moving vehicle are very tired.
A couple has two people and two people who are in a vehicle are travelers and a subway is a moving vehicle and people sleep when they are tired.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & on(x1,x3) & all x6.(n_other(x6) -> to(e1,x6)) & r_next(e1) & Actor(e1,x5) & v_sit(e1) & (x3 = x5) & n_line(x3) & of(x3,x4) & n_subway(x4) & n_sleep(x1) & of(x1,x2) & n_couple(x2))
exists s1 s2 x1 x2.(r_very(s2) & Theme(s2,x1) & a_tired(s2) & in(x1,x2) & n_vehicle(x2) & a_moving(s1) & Theme(s1,x2) & n_traveler(x1) & card_eq_2(x1))