( Stable ( ( isotopes ( in ( sedimentary ( ( rocks and ) fossils ) ) ) ) . ) )
(ROOT (S (NP (NNP Stable)) (VP (VBZ isotopes) (PP (IN in) (NP (JJ sedimentary) (NNS rocks) (CC and) (NNS fossils)))) (. .)))
Stable isotopes in sedimentary rocks and fossils.
(ROOT (S (NP (JJS Most) (NNS fossils)) (VP (VBP are) (VP (VBN found) (PP (IN in) (NP (JJ sedimentary) (NNS rocks))) (SBAR (IN because) (S (NP (NNS organisms)) (VP (MD can) (VP (VB be) (VP (VBN preserved) (PP (IN in) (NP (JJ sedimentary) (NN rock)))))))))) (. .)))