is a tart , smart breath of fresh air 
(ROOT (VP (VBZ is) (NP (NP (DT a) (NN tart) (, ,) (JJ smart) (NN breath)) (PP (IN of) (NP (JJ fresh) (NN air))))))
(ROOT (VP (VBZ ) (NP (NP (DT ) (NN ) (, ) (JJ ) (NN )) (PP (IN ) (NP (JJ ) (NN ))))))