who is the voice of stewie griffin from family guy?
(JOIN (R tv.regular_tv_appearance.actor) (AND (JOIN tv.regular_tv_appearance.time_macro 2015^^http://www.w3.org/2001/XMLSchema#date) (AND (JOIN tv.regular_tv_appearance.special_performance_type m.02nsjvf) (AND (JOIN tv.regular_tv_appearance.character m.02m29p) (JOIN (R tv.tv_program.regular_cast) m.019nnl)))))