( ( The ( DNA molecule ) ) ( ( consists ( of ( ( two ( complementary ( nucleotide chains ) ) ) ( containing ( ( ( ( ( ( ( ( ( ( the ( bases adenine ) ) ( -LRB- ( A -RRB- ) ) ) , ) ( thymine ( -LRB- ( T -RRB- ) ) ) ) , ) ( guanine ( -LRB- ( G -RRB- ) ) ) ) and ) ( cytosine ( -LRB- ( C -RRB- ) ) ) ) , ) ( ( held ( in ( a ( double ( stranded helix ) ) ) ) ) ( by ( bonds ( between ( base pairs ) ) ) ) ) ) ) ) ) ) - ) )
(ROOT (S (NP (DT The) (NNP DNA) (NN molecule)) (VP (VBZ consists) (PP (IN of) (NP (NP (CD two) (JJ complementary) (NN nucleotide) (NNS chains)) (VP (VBG containing) (NP (NP (NP (NP (DT the) (NNS bases) (NN adenine)) (PRN (-LRB- -LRB-) (NP (NNP A)) (-RRB- -RRB-))) (, ,) (NP (NP (NN thymine)) (PRN (-LRB- -LRB-) (NP (NNP T)) (-RRB- -RRB-))) (, ,) (NP (NP (NN guanine)) (PRN (-LRB- -LRB-) (NP (NNP G)) (-RRB- -RRB-))) (CC and) (NP (NP (NN cytosine)) (PRN (-LRB- -LRB-) (NP (NNP C)) (-RRB- -RRB-)))) (, ,) (VP (VBN held) (PP (IN in) (NP (DT a) (JJ double) (JJ stranded) (NN helix))) (PP (IN by) (NP (NP (NNS bonds)) (PP (IN between) (NP (NN base) (NNS pairs))))))))))) (: -)))
The DNA molecule consists of two complementary nucleotide chains containing the bases adenine (A), thymine (T), guanine (G) and cytosine (C), held in a double stranded helix by bonds between base pairs -
(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)))))) (. .)))