be a bit of a cheat in the end 
(ROOT (S (VP (VB be) (NP (NP (DT a) (NN bit)) (PP (IN of) (NP (DT a) (NN cheat)))) (PP (IN in) (NP (DT the) (NN end))))))
(ROOT (S (VP (VB ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (DT ) (NN )))) (PP (IN ) (NP (DT ) (NN ))))))