sentences: sugar is a kind of simple carbohydrate
docs: maple_sugar is carbohydrate. invert_sugar is carbohydrate. preserving_sugar is carbohydrate. beet_sugar is carbohydrate. cane_sugar is carbohydrate. sugars is carbohydrates. sugar_molecule is carbohydrate_molecule. wood_sugar is carbohydrate. sugar is carbohydrate.