A restaurant worker is cleaning a seat.
A restaurant worker.
A restaurant worker is a restaurant worker.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_clean(e1) & n_seat(x3) & n_worker(x1) & of(x1,x2) & n_restaurant(x2))
exists x1 x2.(a_topic(x1) & n_worker(x1) & of(x1,x2) & n_restaurant(x2))