( ( ( Some types ) ( of parasites ) ) ( ( are ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( tapeworms , ) giardia ) , ) protozoa ) , ) flukes ) , ) roundworms ) , ) whipworms ) , ) hookworms ) , ) and ) pinworms ) ) . ) )
(ROOT (S (NP (NP (DT Some) (NNS types)) (PP (IN of) (NP (NNS parasites)))) (VP (VBP are) (NP (NP (NNS tapeworms)) (, ,) (NP (NN giardia)) (, ,) (NP (NN protozoa)) (, ,) (NP (NNS flukes)) (, ,) (NP (NNS roundworms)) (, ,) (NP (NNS whipworms)) (, ,) (NP (NNS hookworms)) (, ,) (CC and) (NP (NNS pinworms)))) (. .)))
Some types of parasites are tapeworms, giardia, protozoa, flukes, roundworms, whipworms, hookworms, and pinworms.
(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.