what's the saturday saturnus ( saturn) with wednesday mercurius (mercury) being mercuridi
CREATE TABLE "greco_roman_tradition" (
  "day_see_irregularities" text,
  "sunday_s_l_sun" text,
  "monday_luna_moon" text,
  "tuesday_mars_mars" text,
  "wednesday_mercurius_mercury" text,
  "thursday_iuppiter_jupiter" text,
  "friday_venus_venus" text,
  "saturday_saturnus_saturn" text
);
SELECT "saturday_saturnus_saturn" FROM "greco_roman_tradition" WHERE "wednesday_mercurius_mercury"='Mercuridi';