( ( A disaccharide ) ( ( is ( ( ( a sugar ) ( -LRB- ( ( a carbohydrate ) -RRB- ) ) ) ( composed ( of ( two monosaccharides ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (NN disaccharide)) (VP (VBZ is) (NP (NP (DT a) (NN sugar)) (PRN (-LRB- -LRB-) (NP (DT a) (NN carbohydrate)) (-RRB- -RRB-)) (VP (VBN composed) (PP (IN of) (NP (CD two) (NNS monosaccharides)))))) (. .)))
A disaccharide is a sugar (a carbohydrate) composed of two monosaccharides.
(ROOT (S (NP (PRP You)) (VP (VBP call) (SBAR (S (NP (DT the) (NN carbohydrate)) (VP (VBD formed) (SBAR (WHADVP (WRB when)) (S (NP (CD two) (JJ monosaccharides) (NN bond)) (ADVP (RB together)) (VP (VBP disaccharide)))))))) (. .)))