( Sugars ( ( are ( classified ( as ( monosaccharides ( , ( disaccharides ( , ( or trisaccharides ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Sugars)) (VP (VBP are) (VP (VBN classified) (PP (IN as) (NP (NNS monosaccharides) (, ,) (NNS disaccharides) (, ,) (CC or) (NNS trisaccharides))))) (. .)))
Sugars are classified as monosaccharides , disaccharides , or trisaccharides .
(ROOT (S (NP (RB Double) (NNS sugars)) (VP (VBP are) (VP (VBN called) (NP (NNS disaccharides)))) (. .)))