( ( The ( juvenile worm ) ) ( ( ( ( ( migrates ( through ( ( the ( host 's ) ) body ) ) ) and ) ( finally ( ends ( up ( in ( ( the ( host 's ) ) ( small intestine ) ) ) ) ) ) ) ( where ( it ( grows ( to ( sexual maturity ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ juvenile) (NN worm)) (VP (VP (VBZ migrates) (PP (IN through) (NP (NP (DT the) (NN host) (POS 's)) (NN body)))) (CC and) (VP (ADVP (RB finally)) (VBZ ends) (ADVP (RB up) (PP (IN in) (NP (NP (DT the) (NN host) (POS 's)) (JJ small) (NN intestine))))) (SBAR (WHADVP (WRB where)) (S (NP (PRP it)) (VP (VBZ grows) (PP (TO to) (NP (JJ sexual) (NN maturity))))))) (. .)))
The juvenile worm migrates through the host's body and finally ends up in the host's small intestine where it grows to sexual maturity.
(ROOT (S (PP (IN In) (NP (NNS intestines))) (NP (JJ human) (NN organ)) (VP (VBP do) (S (NP (DT the) (NNS juveniles)) (VP (VB develop) (PP (IN into) (NP (RB sexually) (JJ mature) (NNS adults)))))) (. .)))