( this ( ( matter ( being ( ( the substance ) ( ( from which ) ( ( all ( the ( chemical elements ) ) ) ( are ( made up ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT this)) (VP (VBP matter) (S (VP (VBG being) (NP (NP (DT the) (NN substance)) (SBAR (WHPP (IN from) (WHNP (WDT which))) (S (NP (PDT all) (DT the) (JJ chemical) (NNS elements)) (VP (VBP are) (VP (VBN made) (PRT (RP up)))))))))) (. .)))
this matter being the substance from which all the chemical elements are made up.
(ROOT (S (S (NP (NN Element)) (VP (VBZ is) (NP (NP (DT the) (JJ basic) (NN chemical) (NN building) (NN block)) (PP (IN of) (NP (NN matter)))))) (: ;) (S (NP (PRP it)) (VP (VBZ is) (NP (DT the) (JJS simplest) (NN chemical) (NN substance)))) (. .)))