People inside a subway car hold on to the rails while people outside the subway car walk away.
There are people inside a subway car who do not care to hold on to the rails.
If people do not care to hold on to the rails then there on people holding on to the rails.
(x)
exists p1 x1 x6.(n_rail(x6) & exists x2 x3 x4 x5.((x1 = x2) & -exists e1 p2.(Topic(e1,p2) & exists e2 s1.(a_on(s1) & Manner(e2,s1) & to(e2,x6) & Actor(e2,x5) & v_hold(e2)) & Actor(e1,x5) & v_care(e1)) & (x2 = x5) & inside(x2,x3) & n_car(x3) & of(x3,x4) & n_subway(x4) & n_people(x2)))