CREATE TABLE table_28512 ("Institution" TEXT, "Location" TEXT, "Founded" FLOAT, "Type" TEXT, "Enrollment" FLOAT, "Nickname" TEXT, "Joined" TEXT)

what is the total number of nicknames for southwestern college?
SELECT COUNT("Nickname") FROM table_28512 WHERE "Institution" = 'Southwestern College'
SELECT COUNT("Nickname") FROM "table_28512" WHERE "Institution" = 'Southwestern College'