The windows of the building are barred.
The building is a jail.
Buildings other than a jail can have barred windows.
exists e1 x1 x2.(n_building(x2) & n_window(x1) & Theme(e1,x1) & v_bar(e1) & of(x1,x2))
exists p1 x1.(n_building(x1) & exists x2.((x1 = x2) & n_jail(x2)))