( ( ( Gastrin Hormone ) that ) ( ( stimulates ( ( the production ) ( of ( gastric ( acid ( or ( stomach acid ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Gastrin) (NNP Hormone)) (NP (DT that))) (VP (VBZ stimulates) (NP (NP (DT the) (NN production)) (PP (IN of) (NP (JJ gastric) (NN acid) (CC or) (NN stomach) (NN acid))))) (. .)))
Gastrin Hormone that stimulates the production of gastric acid or stomach acid.
(ROOT (S (NP (NNP Gastrin)) (VP (VBZ signals) (NP (NP (DT the) (NN secretion)) (PP (IN of) (NP (JJ gastric) (NN acid))))) (. .)))