( ( The ( ( most fundamental ) ( matter particles ) ) ) ( ( are ( ( ( the ( six quarks ) ) and ) ( the ( six leptons ) ) ) ) . ) )
(ROOT (S (NP (DT The) (ADJP (RBS most) (JJ fundamental)) (NN matter) (NNS particles)) (VP (VBP are) (NP (NP (DT the) (CD six) (NNS quarks)) (CC and) (NP (DT the) (CD six) (NNS leptons)))) (. .)))
The most fundamental matter particles are the six quarks and the six leptons .
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD six) (NNS types)) (PP (IN of) (NP (NNS leptons))))) (. .)))