( Fructose ( ( is ( fruit sugar ) ) . ) )
(ROOT (S (NP (NNP Fructose)) (VP (VBZ is) (NP (NN fruit) (NN sugar))) (. .)))
Fructose is fruit sugar.
(ROOT (S (NP (NNP Fructose)) (VP (VBZ is) (NP (NP (DT a) (NN sugar)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (VP (VBN found) (PP (IN in) (NP (NNS fruits))))))))) (. .)))