( to ( ( preserving fossils ) ; ) )
(ROOT (S (NP (TO to)) (VP (VBG preserving) (NP (NNS fossils))) (: ;)))
to preserving 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)))))))))) (. .)))