We need to talk to FAA.
( We ( ( need ( to ( talk ( to FAA ) ) ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VBP need) (S (VP (TO to) (VP (VB talk) (PP (TO to) (NP (NNP FAA))))))) (. .)))
It is necessary for us to talk to FAA.
( It ( ( ( is ( necessary ( for us ) ) ) ( to ( talk ( to FAA ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ is) (ADJP (JJ necessary) (PP (IN for) (NP (PRP us)))) (S (VP (TO to) (VP (VB talk) (PP (TO to) (NP (NNP FAA))))))) (. .)))