Two people sitting together on a subway listening to earphones.
Two people are listening to the sound of the train.
They are listening to earphones not the sound of the train.
exists e1 p1 x1 x2 x3 x4 x5.(a_topic(x1) & on(e1,x3) & to(x3,x5) & n_earphone(x5) & n_listening(x3) & of(x3,x4) & n_subway(x4) & exists s1.(Theme(s1,x2) & a_together(s1)) & Topic(e1,p1) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_train(x3) & n_sound(x2) & to(e1,x2) & of(x2,x3) & Actor(e1,x1) & v_listen(e1) & n_people(x1) & card_eq_2(x1))