A man hauling dirt and sand in a backhoe.
The back hoe is at a construction site.
Nothing specifically says the back hoe is at a construction site.
exists e1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & in(e1,x6) & n_backhoe(x6) & Theme(e1,x3) & Actor(e1,x2) & v_haul(e1) & n_sand(x5) & n_dirt(x4) & subset_of(x5,x3) & subset_of(x4,x3) & (x1 = x2) & n_man(x1))
exists p1 s1 x1.(n_hoe(x1) & a_back(s1) & Theme(s1,x1) & exists x2 x3.(at(x1,x2) & n_site(x2) & of(x2,x3) & n_construction(x3)))