People inside a subway car hold on to the rails while people outside the subway car walk away.
People inside a subway car hold on to the rails at noon.
Just because one is in a subway car does not necessarily mean it is at noon.
(x)
exists e1 x1 x2 x3 x4 x5 x6 x7.(n_rail(x6) & r_on(e1) & to(e1,x6) & at(x6,x7) & n_noon(x7) & Theme(e1,x2) & Actor(e1,x1) & v_event(e1) & inside(x2,x3) & n_hold(x3) & of(x3,x5) & n_car(x5) & of(x3,x4) & n_subway(x4) & n_people(x2) & n_thing(x1))