( ( ( ( Carbon ( is ( ( the ( essential element ) ) ( of ( organic matter ) ) ) ) ) and ) ( ( organic chemistry ) ( is ( defined ( as ( ( the study ) ( of ( compounds ( ( in which ) ( carbon ( ( ( is ( the ( principal element ) ) ) , ) ( ( ( whether ( ( the compound ) ( was ( formed ( by ( living things ) ) ) ) ) ) or ) not ) ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNP Carbon)) (VP (VBZ is) (NP (NP (DT the) (JJ essential) (NN element)) (PP (IN of) (NP (JJ organic) (NN matter)))))) (CC and) (S (NP (JJ organic) (NN chemistry)) (VP (VBZ is) (VP (VBN defined) (PP (IN as) (NP (NP (DT the) (NN study)) (PP (IN of) (NP (NP (NNS compounds)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (NN carbon)) (VP (VBZ is) (NP (DT the) (JJ principal) (NN element)) (, ,) (SBAR (IN whether) (S (NP (DT the) (NN compound)) (VP (VBD was) (VP (VBN formed) (PP (IN by) (NP (VBG living) (NNS things)))))) (CC or) (RB not)))))))))))) (. .)))
Carbon is the essential element of organic matter and organic chemistry is defined as the study of compounds in which carbon is the principal element, whether the compound was formed by living things or not.
(ROOT (S (NP (VBG Living) (NNS organisms)) (VP (VBP are) (VP (VBN comprised) (PP (IN of) (NP (NP (JJ organic) (NNS compounds)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (NP (NP (NNS molecules)) (VP (VBN built) (PP (IN around) (NP (NN carbon)))))))))))) (. .)))