( This ( ( is ( ( a tube ) ( that ( ( connects ( the stomach ) ) ( to ( the ( large intestine ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This)) (VP (VBZ is) (NP (NP (DT a) (NN tube)) (SBAR (WHNP (WDT that)) (S (VP (VBZ connects) (NP (DT the) (NN stomach)) (PP (TO to) (NP (DT the) (JJ large) (NN intestine)))))))) (. .)))
This is a tube that connects the stomach to the large intestine.
(ROOT (S (NP (DT The) (JJ large) (NN intestine)) (VP (VBZ is) (NP (NP (DT a) (JJ wide) (NN tube)) (VP (VBG connecting) (NP (DT the) (JJ small) (NN intestine)) (PP (IN with) (NP (DT the) (NNS anus)))))) (. .)))