A yellow tractor sits on a hillside.
A yellow tractor is out of diesel fuel on the hill.
A that sits on a hillside is not necessarily out of diesel fuel.
exists e1 s1 x1 x2.(on(e1,x2) & n_hillside(x2) & Actor(e1,x1) & v_sit(e1) & n_tractor(x1) & a_yellow(s1) & Theme(s1,x1))
exists p1 s1 x1 x4.(n_hill(x4) & exists x2 x3.(r_out(x1) & of(x1,x2) & on(x2,x4) & n_fuel(x2) & of(x2,x3) & n_diesel(x3)) & n_tractor(x1) & a_yellow(s1) & Theme(s1,x1))