( ( Protein ( amino acid ) ) ( ( contains ( carbon ( , ( hydrogen ( , ( ( oxygen and ) nitrogen ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Protein) (JJ amino) (NN acid)) (VP (VBZ contains) (NP (NN carbon) (, ,) (NN hydrogen) (, ,) (NN oxygen) (CC and) (NN nitrogen))) (. .)))
Protein amino acid contains carbon, hydrogen, oxygen and nitrogen.
(ROOT (S (NP (NNP Rna) (CC and) (NNP dna)) (VP (VBP are) (NP (NP (NNS types)) (PP (IN of) (NP (NP (JJ nucleic) (NNS acids)) (VP (VBG containing) (NP (NP (DT the) (NNS elements)) (NP (NN carbon) (, ,) (NN hydrogen) (, ,) (NN oxygen) (, ,) (NN nitrogen) (, ,) (CC and) (NN phosphorus)))))))) (. .)))