( ( ( ( ( Three elements ) , ) ( well defined ) ) , ) ( that ( ( ( can not ) ( be separated ) ) . ) ) )
(ROOT (S (NP (NP (CD Three) (NNS elements)) (, ,) (VP (ADVP (RB well)) (VBN defined)) (, ,)) (NP (DT that)) (VP (MD can) (RB not) (VP (VB be) (ADJP (JJ separated)))) (. .)))
Three elements, well defined, that cannot be separated.
(ROOT (S (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 separated) (PP (IN into) (NP (NP (JJR smaller) (NNS pieces)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (ADVP (RB also)) (VP (VBN defined) (PP (IN by) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NNS protons))))))))))))))))))) (NP (PRP it)) (VP (VP (VBZ has)) (, ,) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN element))) (. .)))