( Yet ( , ( there ( ( are ( ( ( ( ( about 300 ) types ) ( of ( parasites ( ( thriving ( in America ) ) today ) ) ) ) , ) ( including ( ( ( ( ( ( ( ( ( ( pinworms , ) tapeworms ) , ) hookworms ) , ) ( ringworm 's ) ) , ) ( whipworms roundworrns ) ) and ) ( microscopic parasites ) ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Yet)) (, ,) (NP (EX there)) (VP (VBP are) (NP (NP (QP (RB about) (CD 300)) (NNS types)) (PP (IN of) (NP (NP (NNS parasites)) (VP (VBG thriving) (PP (IN in) (NP (NNP America))) (NP (NN today))))) (, ,) (PP (VBG including) (NP (NP (NNS pinworms)) (, ,) (NP (NNS tapeworms)) (, ,) (NP (NNS hookworms)) (, ,) (NP (NNP ringworm) (POS 's)) (, ,) (NP (JJ whipworms) (NNS roundworrns)) (CC and) (NP (JJ microscopic) (NNS parasites)))))) (. .)))
Yet, there are about 300 types of parasites thriving in America today, including pinworms, tapeworms, hookworms, ringworm's, whipworms roundworrns and microscopic parasites.
(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.