( These ( ( are ( breaks ( in ( ( ( ( the lining ) ( of ( ( ( ( ( the stomach ) ( -LRB- ( ( gastric ulcer ) -RRB- ) ) ) or ) duodenum ) ( -LRB- ( ( duodenal ulcer ) -RRB- ) ) ) ) ) , ) ( which ( hurt ( because ( of ( exposure ( to ( the ( stomach acids ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT These)) (VP (VBP are) (NP (NP (NNS breaks)) (PP (IN in) (NP (NP (DT the) (NN lining)) (PP (IN of) (NP (NP (DT the) (NN stomach)) (PRN (-LRB- -LRB-) (NP (JJ gastric) (NN ulcer)) (-RRB- -RRB-)) (CC or) (NP (NN duodenum)) (PRN (-LRB- -LRB-) (NP (JJ duodenal) (NN ulcer)) (-RRB- -RRB-)))) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBN hurt) (PP (RB because) (IN of) (NP (NP (NN exposure)) (PP (TO to) (NP (DT the) (NN stomach) (NNS acids)))))))))))) (. .)))
These are breaks in the lining of the stomach (gastric ulcer) or duodenum (duodenal ulcer), which hurt because of exposure to the stomach acids.
(ROOT (S (NP (JJ Gastric) (NN emptying)) (VP (VBZ is) (VP (VBN regulated) (PP (IN by) (NP (NP (PDT both) (DT the) (NN stomach)) (CC and) (NP (DT the) (NN duodenum)))))) (. .)))