A city worker clean outside window of a train.
The worker is cleaning the interior of the train.
Outside is not the interior.
exists s1 x1 x2 x3 x4 x5.(a_topic(x1) & outside(s1,x4) & of(x4,x5) & n_train(x5) & n_window(x4) & Theme(s1,x3) & a_clean(s1) & (x1 = x3) & n_worker(x1) & of(x1,x2) & n_city(x2))
exists e1 x1 x2 x3.(n_train(x3) & n_interior(x2) & n_worker(x1) & Theme(e1,x2) & Actor(e1,x1) & v_clean(e1) & of(x2,x3))