( ( ( Would ( ( limiting ( the number ) ) ( of ( cars ( in ( Tokyo not ) ) ) ) ) ) ( be ( a ( ( more efficient ) improvement ) ) ) ) ? )
(ROOT (SQ (MD Would) (NP (NP (RB limiting) (DT the) (NN number)) (PP (IN of) (NP (NP (NNS cars)) (PP (IN in) (NP (NNP Tokyo) (RB not)))))) (VP (VB be) (NP (DT a) (ADJP (RBR more) (JJ efficient)) (NN improvement))) (. ?)))
Would limiting the number of cars in Tokyo not be a more efficient improvement?
(ROOT (S (S (VP (VBG Limiting) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (NNS cars)) (PP (IN on) (NP (DT the) (NNS roads)))))))) (VP (MD would) (ADVP (RBS most) (RB likely)) (VP (VB improve) (NP (DT the) (NN air) (NN quality)) (PP (IN in) (NP (JJ large) (NNS texas) (NNS cities))))) (. .)))