( ( In humans ) ( , ( DNA ( ( is ( organized ( into ( ( 23 pairs ) ( of chromosomes ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NNS humans))) (, ,) (NP (NNP DNA)) (VP (VBZ is) (VP (VBN organized) (PP (IN into) (NP (NP (CD 23) (NNS pairs)) (PP (IN of) (NP (NNS chromosomes))))))) (. .)))
In humans, DNA is organized into 23 pairs of chromosomes.
(ROOT (S (NP (NNS Humans)) (VP (VBP have) (NP (NP (CD 23) (JJ pairs) (NNS pairs)) (PP (IN of) (NP (NNS chromosomes))))) (. .)))