A yellow tractor sits on a hillside.
A tractor sits broken.
A tractor on a hillside doesn't imply tractor sits broken.
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 e1 p1 x1.(exists e2.(Theme(e2,x1) & v_break(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_sit(e1) & n_tractor(x1))