( There ( ( are ( ( six leptons ) ( in total ) ) ) ; ) )
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD six) (NNS leptons)) (PP (IN in) (NP (NN total))))) (: ;)))
There are six leptons in total;
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD six) (NNS types)) (PP (IN of) (NP (NNS leptons))))) (. .)))