( Hookworm ( ( is ( ( a parasite ) ( that ( lives ( in ( the ( gut ( and ( causes anemia ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Hookworm)) (VP (VBZ is) (NP (NP (DT a) (NN parasite)) (SBAR (WHNP (WDT that)) (S (VP (VBZ lives) (PP (IN in) (NP (DT the) (NN gut) (CC and) (NNS causes) (NN anemia)))))))) (. .)))
Hookworm is a parasite that lives in the gut and causes anemia.
(ROOT (S (NP (DT A) (NN hookworm)) (VP (VBZ is) (VP (VBN classified) (PP (IN as) (NP (DT a) (NN parasite))))) (. .)))
A hookworm is classified as a parasite.