( ( The ( acid polysaccharides ) ) ( ( were ( composed ( of ( ( 27 % ) ( of ( reducing ( ( ( ( sugar , ) ( ( 42 % ) ( of ( neutral sugars ) ) ) ) and ) ( ( 21 % ) ( of ( uronic acid ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ acid) (NNS polysaccharides)) (VP (VBD were) (VP (VBN composed) (PP (IN of) (NP (NP (CD 27) (NN %)) (PP (IN of) (S (VP (VBG reducing) (NP (NP (NN sugar)) (, ,) (NP (NP (CD 42) (NN %)) (PP (IN of) (NP (JJ neutral) (NNS sugars)))) (CC and) (NP (NP (CD 21) (NN %)) (PP (IN of) (NP (JJ uronic) (NN acid)))))))))))) (. .)))
The acid polysaccharides were composed of 27% of reducing sugar, 42% of neutral sugars and 21% of uronic acid.
(ROOT (S (NP (NNS Polysaccharides)) (VP (VBP are) (NP (NP (NNS polymers)) (VP (VBN composed) (PP (IN of) (NP (NP (JJ many) (NN sugar) (NN building) (NNS blocks)) (VP (VBN called))))))) (. .)))