( ( ( NITROGEN FIXATION ) ( ( The nitrogen ) ( in ( proteins ( of ( every ( living thing ) ) ) ) ) ) ) ( ( ( comes ultimately ) ( from ( thin air ) ) ) . ) )
(ROOT (S (NP (NP (NNP NITROGEN) (NNP FIXATION)) (PP (NP (DT The) (NN nitrogen)) (IN in) (NP (NP (NNS proteins)) (PP (IN of) (NP (DT every) (VBG living) (NN thing)))))) (VP (VBZ comes) (ADVP (RB ultimately)) (PP (IN from) (NP (JJ thin) (NN air)))) (. .)))
NITROGEN FIXATION The nitrogen in proteins of every living thing comes ultimately from thin air.
(ROOT (S (NP (DT The) (NN nitrogen) (NN cycle)) (VP (VBZ includes) (NP (NP (NN air)) (, ,) (NP (NN soil)) (, ,) (CC and) (NP (VBG living) (NNS things)))) (. .)))