( ( ( The elements ) ( hydrogen ( , ( carbon ( , ( ( nitrogen and ) oxygen ) ) ) ) ) ) ( ( are ( ( the elements ) ( that ( ( make up ) ( ( most living ) organisms ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS elements)) (NP (NN hydrogen) (, ,) (NN carbon) (, ,) (NN nitrogen) (CC and) (NN oxygen))) (VP (VBP are) (NP (NP (DT the) (NNS elements)) (SBAR (WHNP (WDT that)) (S (VP (VBP make) (PRT (RP up)) (NP (ADJP (RBS most) (JJ living)) (NNS organisms))))))) (. .)))
The elements hydrogen, carbon, nitrogen and oxygen are the elements that make up most living organisms.
(ROOT (S (NP (DT The) (NN sun)) (ADVP (RB mostly)) (VP (VBD made) (PRT (RP up)) (PP (IN of) (NP (DT the) (NN element) (NN hydrogen)))) (. .)))