a woman is walking beside a subway.
A woman is walking to her train
A subway is not a train.
exists e1 x1 x2.(beside(e1,x2) & n_subway(x2) & Actor(e1,x1) & v_walk(e1) & n_woman(x1))
exists e1 x1 x2.(to(e1,x2) & n_train(x2) & of(x2,x1) & n_female(x1) & Actor(e1,x1) & v_walk(e1) & n_woman(x1))