CREATE TABLE table_28401 ("Institution" CLOB, "Location" CLOB, "Nickname" CLOB, "Founded" FLOAT, "Founding Religious Affiliation" CLOB, "Enrollment" FLOAT, "Joined" FLOAT)

Which institution's nickname is the Polar Bears?
SELECT "Institution" FROM table_28401 WHERE "Nickname" = 'Polar Bears'
SELECT "Institution" FROM "table_28401" WHERE "Nickname" = 'Polar Bears'