He says he brought the proposal for professional parachute helmets with an air-bag system.'
( He ( ( ( says ( he ( ( ( brought ( the proposal ) ) ( for ( professional ( parachute helmets ) ) ) ) ( with ( an ( air-bag system ) ) ) ) ) ) . ) ' ) )
(ROOT (S (NP (PRP He)) (VP (VBZ says) (SBAR (S (NP (PRP he)) (VP (VBD brought) (NP (DT the) (NN proposal)) (PP (IN for) (NP (JJ professional) (NN parachute) (NNS helmets))) (PP (IN with) (NP (DT an) (JJ air-bag) (NN system))))))) (. .) ('' ')))
He didn't buy the helmet proposal.
( He ( ( ( did n't ) ( buy ( the ( helmet proposal ) ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD did) (RB n't) (VP (VB buy) (NP (DT the) (JJ helmet) (NN proposal)))) (. .)))