A woman on the subway looking out the window.
A person is riding in a train.
A woman on a subway looking out a window is a person, which implies she is riding a train
exists e1 s1 x1 x2 x3 x4.(n_window(x4) & n_subway(x2) & a_topic(x1) & on(x1,x2) & Time(e1,x4) & a_out(s1) & Manner(e1,s1) & Actor(e1,x3) & v_look(e1) & (x2 = x3) & n_woman(x1))
exists e1 x1 x2.(in(e1,x2) & n_train(x2) & Actor(e1,x1) & v_ride(e1) & n_person(x1))