( Frogs ( ( ( replace them ) ( with ( lungs ( in ( ( the transition ) ( from ( tadpoles ( to adults ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Frogs)) (VP (VBP replace) (NP (PRP them)) (PP (IN with) (NP (NP (NNS lungs)) (PP (IN in) (NP (NP (DT the) (NN transition)) (PP (IN from) (NP (NP (NNS tadpoles)) (PP (TO to) (NP (NNS adults)))))))))) (. .)))
Frogs replace them with lungs in the transition from tadpoles to adults.
(ROOT (S (NP (DT A) (NN frog)) (VP (VBZ develops) (NP (PRN (-LRB- -LRB-) (NP (NN a/an)) (-RRB- -RRB-)) (NNS lungs)) (SBAR (IN as) (S (NP (PRP it)) (VP (VBZ changes) (PP (IN from) (NP (DT a) (NN tadpole))) (PP (TO to) (NP (DT an) (JJ adult) (NN frog))))))) (. .)))