( ( Like leptons ) ( , ( there ( ( are ( ( ( ( ( ( six flavors ) , ) or ) varieties ) , ) ( of ( quarks ( in ( three generations ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN Like) (NP (NNS leptons))) (, ,) (NP (EX there)) (VP (VBP are) (NP (NP (NP (CD six) (NNS flavors)) (, ,) (CC or) (NP (NNS varieties)) (, ,)) (PP (IN of) (NP (NP (NNS quarks)) (PP (IN in) (NP (CD three) (NNS generations))))))) (. .)))
Like leptons, there are six flavors, or varieties, of quarks in three generations.
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD six) (NNS types)) (PP (IN of) (NP (NNS leptons))))) (. .)))