A man asleep on a subway car.
A man is sleeping.
Sleeping is being asleep.
exists x1 x2 x3 x4.(a_topic(x1) & on(x1,x3) & n_car(x3) & of(x3,x4) & n_subway(x4) & n_asleep(x1) & of(x1,x2) & n_man(x2))
exists e1 x1.(Actor(e1,x1) & v_sleep(e1) & n_man(x1))