A backhoe is on top of a pile of rubble from a demolished building.
A backhoe is on top of a mound of excavated earth in a forested region.
A demolished building isn't a forested region
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 p1 x1.(exists e1 s1 x2 x3 x4 x5.(on(x1,x2) & of(x2,x3) & of(x3,x4) & in(x4,x5) & n_region(x5) & a_forested(s1) & Theme(s1,x5) & n_earth(x4) & Theme(e1,x4) & v_excavate(e1) & n_mound(x3) & n_top(x2)) & n_backhoe(x1))