This person is cleaning the building using a green bucket.
A person is cleaning a building.
The person cleaning a building has a green bucket.
exists e2 e1 s1 x1 x2 x3.(n_building(x2) & n_person(x1) & for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_use(e2) & n_bucket(x3) & a_green(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_clean(e1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_clean(e1) & n_building(x2) & n_person(x1))