CREATE TABLE table_68027 ("Year" FLOAT, "Result" TEXT, "Award" TEXT, "Category" TEXT, "Nominated work" TEXT)

what year has general nominated in the category or choice breakthrough artist?
SELECT COUNT("Year") FROM table_68027 WHERE "Nominated work" = 'general' AND "Category" = 'choice breakthrough artist'
SELECT COUNT("Year") FROM "table_68027" WHERE "Category" = 'choice breakthrough artist' AND "Nominated work" = 'general'