Calculate the total rating of winners in OFTA Television Award and WGA Award (TV).
winners refers to result = 'Winner'; in OFTA Television Award and WGA Award (TV) refers to award = 'OFTA Television Award' and award = 'WGA Award (TV)'
SELECT SUM(T2.rating) FROM Award AS T1 INNER JOIN Episode AS T2 ON T1.episode_id = T2.episode_id WHERE T1.award_category IN ('Jupiter Award ', 'WGA Award (TV)');