A couple kisses beside train tracks.
They are kissing goodbye.
People kiss besides train tracks for reasons other than kissing goodbye.
exists e1 x1 x2 x3.(beside(e1,x2) & n_track(x2) & of(x2,x3) & n_train(x3) & Actor(e1,x1) & v_kiss(e1) & n_couple(x1))
exists e1 x1 x2.(n_thing(x1) & Theme(e1,x2) & Actor(e1,x1) & v_kiss(e1) & n_goodbye(x2))