( ( Amino acids ) ( ( are ( made ( of ( carbon ( , ( nitrogen ( , ( ( oxygen and ) hydrogen ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Amino) (NNS acids)) (VP (VBP are) (VP (VBN made) (PP (IN of) (NP (NN carbon) (, ,) (NN nitrogen) (, ,) (NN oxygen) (CC and) (NN hydrogen))))) (. .)))
Amino acids are made of carbon, nitrogen, oxygen and hydrogen.
(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)))))))) (. .)))