A backhoe is on top of a pile of rubble from a demolished building.
A rubble pile that used to be a building is now being sat on by a backhoe.
A demolished building used to be a building until it was demolished.
exists p1 x1.(exists s1 x2 x3 x4 x5.(on(x1,x2) & of(x2,x3) & of(x3,x4) & from(x4,x5) & n_building(x5) & a_demolished(s1) & Theme(s1,x5) & n_rubble(x4) & n_pile(x3) & n_top(x2)) & n_backhoe(x1))
exists e1 e2 p1 s1 x1 x2 x3 x4.(a_now(s1) & Manner(e1,s1) & Actor(e1,x4) & n_backhoe(x4) & on(e1,x1) & Topic(e2,p1) & Actor(e2,x3) & v_use(e2) & exists p2 x5.((x3 = x5) & n_building(x5)) & (x1 = x3) & n_pile(x1) & of(x1,x2) & n_rubble(x2) & v_sit(e1))