( ( Chromosome 11 ) ( ( is ( one ( of ( ( the ( 23 pairs ) ) ( of ( chromosomes ( in humans ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Chromosome) (CD 11)) (VP (VBZ is) (NP (NP (CD one)) (PP (IN of) (NP (NP (DT the) (CD 23) (NNS pairs)) (PP (IN of) (NP (NP (NNS chromosomes)) (PP (IN in) (NP (NNS humans))))))))) (. .)))
Chromosome 11 is one of the 23 pairs of chromosomes in humans.
(ROOT (S (NP (NNS Humans)) (VP (VBP have) (NP (NP (CD 23) (JJ pairs) (NNS pairs)) (PP (IN of) (NP (NNS chromosomes))))) (. .)))