( Lactose ( ( is ( called ( ( ( ( ( a ( disaccharide ( , ( di ( meaning 2 ) ) ) ) ) , ) ( since ( lactose ( is ( ( made up ) ( of ( two ( sugars ( , ( ( galactose and ) glucose ) ) ) ) ) ) ) ) ) ) , ) ( bound together ) ) ) ) . ) )
(ROOT (S (NP (NNP Lactose)) (VP (VBZ is) (VP (VBN called) (SBAR (S (NP (NP (DT a) (NN disaccharide) (, ,) (NNP di) (NN meaning) (CD 2)) (, ,) (SBAR (IN since) (S (NP (NN lactose)) (VP (VBZ is) (VP (VBN made) (PRT (RP up)) (PP (IN of) (NP (CD two) (NNS sugars) (, ,) (NN galactose) (CC and) (NN glucose))))))) (, ,)) (VP (VBN bound) (ADVP (RB together))))))) (. .)))
Lactose is called a disaccharide, di meaning 2, since lactose is made up of two sugars, galactose and glucose, bound together.
(ROOT (S (NP (RB Double) (NNS sugars)) (VP (VBP are) (VP (VBN called) (NP (NNS disaccharides)))) (. .)))