( ( ( ( Included ( in ( ( the ( six ( known types ) ) ) ( of leptons ) ) ) ) are ) ( ( ( the electron ) , ) ( ( ( ( the muon ) , ) and ) ( the tau ) ) ) ) . )
(ROOT (SINV (VP (VBN Included) (PP (IN in) (NP (NP (DT the) (CD six) (VBN known) (NNS types)) (PP (IN of) (NP (NNS leptons)))))) (VP (VBP are)) (NP (NP (DT the) (NN electron)) (, ,) (NP (NP (DT the) (NN muon)) (, ,) (CC and) (NP (DT the) (NN tau)))) (. .)))
Included in the six known types of leptons are the electron, the muon, and the tau.
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD six) (NNS types)) (PP (IN of) (NP (NNS leptons))))) (. .)))