( DNA ( ( consists ( of ( ( two strands ) ( of ( nucleotides ( twisted ( into ( a ( double helix ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP DNA)) (VP (VBZ consists) (PP (IN of) (NP (NP (CD two) (NNS strands)) (PP (IN of) (NP (NP (NNS nucleotides)) (VP (VBN twisted) (PP (IN into) (NP (DT a) (JJ double) (NN helix))))))))) (. .)))
DNA consists of two strands of nucleotides twisted into a double helix.
(ROOT (S (NP (NNP Dna)) (VP (VBZ consists) (PP (IN of) (NP (NP (CD two) (JJ long) (NNS chains)) (PP (IN of) (NP (NNS nucleotides)))))) (. .)))