A backhoe is on top of a pile of rubble from a demolished building.
Heavy machinery was used in the demolition.
Backhoe are heavy machinery.
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 s1 x1 x2.(n_demolition(x2) & in(e1,x2) & Theme(e1,x1) & v_use(e1) & n_machinery(x1) & a_heavy(s1) & Theme(s1,x1))