( Hookworms ( ( live ( in ( the ( small intestine ) ) ) ) . ) )
(ROOT (S (NP (NNS Hookworms)) (VP (VBP live) (PP (IN in) (NP (DT the) (JJ small) (NN intestine)))) (. .)))
Hookworms live in the small intestine.
(ROOT (S (NP (NNS Hookworms)) (VP (VBP infest) (NP (DT the) (NNS intestines))) (. .)))