( These ( ( are ( ( ( ( ( ( ( ( ( ( the mouth ) , ) esophagus ) , ) stomach ) , ) ( small ( and ( large intestines ) ) ) ) , ) and ) rectum ) ) . ) )
(ROOT (S (NP (DT These)) (VP (VBP are) (NP (NP (DT the) (NN mouth)) (, ,) (NP (NNS esophagus)) (, ,) (NP (NN stomach)) (, ,) (NP (JJ small) (CC and) (JJ large) (NNS intestines)) (, ,) (CC and) (NP (NN rectum)))) (. .)))
These are the mouth, esophagus, stomach, small and large intestines, and rectum.
(ROOT (S (NP (DT The) (JJ small) (NN intestine)) (VP (VBZ begins) (PP (IN in) (NP (DT the) (NN stomach)))) (. .)))