The beautiful oriental building is being occupied.
People sitting inside of an oriental building.
A building that is occupied does not necessarily have people sitting, they could stand or walk or other things.
exists e1 s1 s2 x1.(n_building(x1) & a_oriental(s2) & Theme(s2,x1) & a_beautiful(s1) & Theme(s1,x1) & Theme(e1,x1) & v_occupy(e1))
exists e1 s1 s2 x1 x2 x3.(a_topic(x1) & of(e1,x3) & n_building(x3) & a_oriental(s2) & Theme(s2,x3) & a_inside(s1) & Manner(e1,s1) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1))