( Later ( , ( ( ( ( ( ( the contents ) ( of ( the ( ( duodenum and ) stomach ) ) ) ) ( were ( pumped out ) ) ) and ) ( it ( was ( learned ( that ( ( ( marked digestion ) ( of ( ( the food ) consumed ) ) ) ( occurred ( in ( both instances ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (ADVP (RB Later)) (, ,) (S (NP (NP (DT the) (NNS contents)) (PP (IN of) (NP (DT the) (NN duodenum) (CC and) (NN stomach)))) (VP (VBD were) (VP (VBN pumped) (PRT (RP out))))) (CC and) (S (NP (PRP it)) (VP (VBD was) (VP (VBN learned) (SBAR (IN that) (S (NP (NP (JJ marked) (NN digestion)) (PP (IN of) (NP (NP (DT the) (NN food)) (VP (VBN consumed))))) (VP (VBD occurred) (PP (IN in) (NP (DT both) (NNS instances))))))))) (. .)))
Later, the contents of the duodenum and stomach were pumped out and it was learned that marked digestion of the food consumed occurred in both instances.
(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)))))) (. .)))