( ( ( ( ( Carbohydrate digestion ) , ) ( begun ( by ( ( salivary amylase ) ( in ( the mouth ) ) ) ) ) ) , ) ( ( ( continues ( in ( the bolus ) ) ) ( as ( it ( passes ( to ( the stomach ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Carbohydrate) (NN digestion)) (, ,) (VP (VBN begun) (PP (IN by) (NP (NP (JJ salivary) (NN amylase)) (PP (IN in) (NP (DT the) (NN mouth)))))) (, ,)) (VP (VBZ continues) (PP (IN in) (NP (DT the) (NNS bolus))) (SBAR (IN as) (S (NP (PRP it)) (VP (VBZ passes) (PP (TO to) (NP (DT the) (NN stomach))))))) (. .)))
Carbohydrate digestion, begun by salivary amylase in the mouth, continues in the bolus as it passes to the stomach.
(ROOT (S (NP (JJ Carbohydrate) (NN digestion)) (VP (VBZ begins) (PP (IN in) (NP (DT the) (NN mouth)))) (. .)))