( ( Most digestion ) ( ( is ( completed ( in ( the ( small intestine ) ) ) ) ) . ) )
(ROOT (S (NP (JJS Most) (NNS digestion)) (VP (VBZ is) (VP (VBN completed) (PP (IN in) (NP (DT the) (JJ small) (NN intestine))))) (. .)))
Most digestion is completed in the small intestine.
(ROOT (S (NP (NP (JJS Most)) (PP (IN of) (NP (DT the) (NN digestion) (NNS reactions)))) (VP (VBP occur) (PP (IN in) (NP (DT the) (JJ small) (NN intestine)))) (. .)))