( We ( ( want ( to ( know ( the ( instantaneous velocity ) ) ) ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VBP want) (S (VP (TO to) (VP (VB know) (NP (DT the) (JJ instantaneous) (NN velocity)))))) (. .)))
We want to know the instantaneous velocity .
(ROOT (S (NP (JJ Instantaneous) (NN velocity)) (VP (VBZ is) (VP (VBN defined) (PP (IN as) (NP (NP (DT the) (NN velocity)) (PP (IN of) (NP (DT the) (NN object))))) (PP (IN at) (NP (DT a) (VBN given) (NN moment))))) (. .)))