( ( ( ( ( Structure Print ) section ) ( ( A molecule ) ( of ( ( DNA consists ) ( of ( ( ( two chains ) , ) ( strands ( composed ( of ( ( a ( large number ) ) ( of ( chemical compounds ) ) ) ) ) ) ) ) ) ) ) ) , ) ( ( called ( ( nucleotides , ) ( ( linked together ) ( to ( form ( a chain ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Structure) (NNP Print)) (, section) (NP (NP (DT A) (NN molecule)) (PP (IN of) (NP (NP (NNP DNA) (NNP consists)) (PP (IN of) (NP (NP (CD two) (NNS chains)) (, ,) (NP (NP (NNS strands)) (VP (VBN composed) (PP (IN of) (NP (NP (DT a) (JJ large) (NN number)) (PP (IN of) (NP (NN chemical) (NNS compounds)))))))))))) (, ,)) (VP (VBD called) (NP (NP (NNS nucleotides)) (, ,) (VP (VBN linked) (ADVP (RB together)) (S (VP (TO to) (VP (VB form) (NP (DT a) (NN chain)))))))) (. .)))
Structure Print section A molecule of DNA consists of two chains, strands composed of a large number of chemical compounds, called nucleotides, linked together to form a chain.
(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)))))) (. .)))