( ( Amino acids ) ( ( ( are compounds ) ( containing ( ( ( ( carbon ( , ( hydrogen ( , ( oxygen ( , ( nitrogen , ) ) ) ) ) ) ) and ) occasionally ) sulphur ) ) ) . ) )
(ROOT (S (NP (NNP Amino) (NNS acids)) (VP (VBP are) (ADVP (RB compounds)) (VP (VBG containing) (NP (NP (NN carbon) (, ,) (NN hydrogen) (, ,) (NN oxygen) (, ,) (NN nitrogen) (, ,)) (CC and) (ADVP (RB occasionally)) (NP (NN sulphur))))) (. .)))
Amino acids are compounds containing carbon, hydrogen, oxygen, nitrogen, and occasionally sulphur.
(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)))))))) (. .)))