( ( An element ) ( ( ( can not ) ( be ( ( changed ( into ( simpler substances ) ) ) ( by ( any ( chemical process ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT An) (NN element)) (VP (MD can) (RB not) (VP (VB be) (VP (VBN changed) (PP (IN into) (NP (JJR simpler) (NNS substances))) (PP (IN by) (NP (DT any) (NN chemical) (NN process)))))) (. .)))
An element cannot be changed into simpler substances by any chemical process.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (DT a) (NN substance)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (RB not) (VP (VB be) (VP (VBN broken) (PRT (RP down)) (PP (TO to) (NP (JJ other) (NNS substances))) (PP (IN by) (NP (NP (NN chemical) (NNS reactions)) (NP (DT an) (NN element))))))))))) (. .)))