( Digestion ( ( ( ( takes place ) ( mostly ( in ( ( the ( first part ) ) ( of ( ( ( ( the ( small intestine ) ) , ) ( the duodenum ) ) , ) ) ) ) ) ) ( where ( ( the ( pancreas ( and ( gall bladder ) ) ) ) ( add ( their ( digestive juices ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Digestion)) (VP (VBZ takes) (NP (NN place)) (PP (RB mostly) (IN in) (NP (NP (DT the) (JJ first) (NN part)) (PP (IN of) (NP (NP (DT the) (JJ small) (NN intestine)) (, ,) (NP (DT the) (NN duodenum)) (, ,))))) (SBAR (WHADVP (WRB where)) (S (NP (DT the) (NN pancreas) (CC and) (NN gall) (NN bladder)) (VP (VBP add) (NP (PRP$ their) (JJ digestive) (NNS juices)))))) (. .)))
Digestion takes place mostly in the first part of the small intestine, the duodenum, where the pancreas and gall bladder add their digestive juices.
(ROOT (S (NP (JJS Most) (NNS digestion)) (VP (VBZ is) (VP (VBN completed) (PP (IN in) (NP (DT the) (NN duodenum))))) (. .)))