Two men on a busy subway, seen from behind.
Men ride the subway.
Ride the subway is a rephrase of on a subway.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & on(x1,x2) & from(e1,x4) & n_behind(x4) & Theme(e1,x3) & v_see(e1) & (x2 = x3) & n_subway(x2) & a_busy(s1) & Theme(s1,x2) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_subway(x2) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_man(x1))