CREATE TABLE table_13276 ("School" CLOB, "Location" CLOB, "Mascot" CLOB, "IHSAA Class" CLOB, "County" CLOB, "Year Joined" CLOB, "Year Left" CLOB, "Conference Joined" CLOB)

Which county has the mascot of Bruins?
SELECT "County" FROM table_13276 WHERE "Mascot" = 'bruins'
SELECT "County" FROM "table_13276" WHERE "Mascot" = 'bruins'