( And ( matter ( ( ( can not ) ( be ( ( created or ) ( ( destroyed ( -LRB- ( ( not ( in ( ( ( normal ( chemical reactions ) ) , ) anyway ) ) ) -RRB- ) ) ) ( so ( ( ( all ( the matter ) ) ( originally present ) ) ( ( must still ) ( be ( present ( in ( ( ( one form ) or ) another ) ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (CC And) (NP (NN matter)) (VP (MD can) (RB not) (VP (VB be) (VP (VP (VBN created)) (CC or) (VP (VBN destroyed) (PRN (-LRB- -LRB-) (PP (RB not) (IN in) (NP (NP (JJ normal) (NN chemical) (NNS reactions)) (, ,) (ADVP (RB anyway)))) (-RRB- -RRB-)) (SBAR (IN so) (S (NP (NP (PDT all) (DT the) (NN matter)) (ADJP (RB originally) (JJ present))) (VP (MD must) (ADVP (RB still)) (VP (VB be) (ADJP (JJ present) (PP (IN in) (NP (NP (CD one) (NN form)) (CC or) (NP (DT another))))))))))))) (. .)))
And matter cannot be created or destroyed (not in normal chemical reactions, anyway) so all the matter originally present must still be present in one form or another.
(ROOT (S (NP (NNP Matter)) (VP (MD can) (RB not) (VP (VB be) (VP (VBN created) (CC or) (VBN destroyed) (PP (IN in) (NP (DT a) (NN chemical) (NN reaction)))))) (. .)))