( Organic ( Sedimentary ( Rocks ; ) ) )
(ROOT (NP (NNP Organic) (NNP Sedimentary) (NNP Rocks) (: ;)))
Organic Sedimentary Rocks;
(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)))))))))) (. .)))