( ( ( ( DNA , ) ( the ( genetic ( building block ) ) ) ) , ) ( ( is ( ( made up ) ( of ( substances ( called ( ( nucleotides , ) ( ( each ( of which ) ) ( consists ( of ( ( ( a phosphate ) , ) ( ( a sugar ) ( known ( as ( ( deoxyribose and ) ( ( any one ) ( of ( four ( nitrogen-containing bases ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP DNA)) (, ,) (NP (DT the) (JJ genetic) (NN building) (NN block)) (, ,)) (VP (VBZ is) (VP (VBN made) (PRT (RP up)) (PP (IN of) (NP (NP (NNS substances)) (VP (VBN called) (NP (NP (NNS nucleotides)) (, ,) (SBAR (WHNP (NP (DT each)) (WHPP (IN of) (WHNP (WDT which)))) (S (VP (VBZ consists) (PP (IN of) (NP (NP (DT a) (NN phosphate)) (, ,) (NP (NP (DT a) (NN sugar)) (VP (VBN known) (PP (IN as) (NP (NP (NN deoxyribose)) (CC and) (NP (NP (DT any) (NN one)) (PP (IN of) (NP (CD four) (JJ nitrogen-containing) (NNS bases))))))))))))))))))) (. .)))
DNA, the genetic building block, is made up of substances called nucleotides, each of which consists of a phosphate, a sugar known as deoxyribose and any one of four nitrogen-containing bases.
(ROOT (S (NP (NP (DT The) (NN base)) (PP (IN of) (NP (NP (DT a) (NN nucleotide)) (PP (IN within) (NP (NN dna)))))) (VP (VBZ consists) (PP (IN of) (NP (NN nitrogen)))) (. .)))