CREATE TABLE table_51936 ("Club" TEXT, "Sport" TEXT, "League" TEXT, "Venue" TEXT, "Established" FLOAT, "Championships" FLOAT)

Which WNBA team that won at least 2 championships was established most recently?
SELECT MAX("Established") FROM table_51936 WHERE "League" = 'wnba' AND "Championships" > '2'
SELECT MAX("Established") FROM "table_51936" WHERE "Championships" > '2' AND "League" = 'wnba'