( ( ( The code ) ( for ( a ( human being ) ) ) ) ( ( is ( contained ( in ( ( 23 pairs ) ( of chromosomes ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN code)) (PP (IN for) (NP (DT a) (NN human) (VBG being)))) (VP (VBZ is) (VP (VBN contained) (PP (IN in) (NP (NP (CD 23) (NNS pairs)) (PP (IN of) (NP (NNS chromosomes))))))) (. .)))
The code for a human being is contained in 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))))) (. .)))