A man asleep on a subway car.
The man is alone on the subway car.
IT IS NOT KNOWN IF THE MAN IS ALONE.
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 s1 x1 x2 x3.(n_car(x2) & of(x2,x3) & n_subway(x3) & n_man(x1) & on(s1,x2) & Theme(s1,x1) & a_alone(s1))