( 1 ( ( The ( gastrointestinal tract ) ) ( ( is ( ( a ( 30-foot tube ) ) ( ( running ( from ( your mouth ) ) ) ( to ( your anus ) ) ) ) ) . ) ) )
(ROOT (S (LST (LS 1)) (NP (DT The) (JJ gastrointestinal) (NN tract)) (VP (VBZ is) (NP (NP (DT a) (JJ 30-foot) (NN tube)) (VP (VBG running) (PP (IN from) (NP (PRP$ your) (NN mouth))) (PP (TO to) (NP (PRP$ your) (NNS anus)))))) (. .)))
1  The gastrointestinal tract is a 30-foot tube running from your mouth to your anus.
(ROOT (S (NP (DT The) (NN term) (NN gastrointestinal) (NN tract)) (VP (VBZ describes) (NP (NP (DT the) (JJ long) (NN tube)) (SBAR (WHNP (WDT that)) (S (VP (VBZ connects) (NP (DT the) (NN mouth)) (PP (TO to) (NP (DT the) (NNS anus)))))))) (. .)))