CREATE TABLE table_31966 ("Calls" CLOB, "Frequency" CLOB, "Branding" CLOB, "Format" CLOB, "Timeslot" CLOB, "Group owner" CLOB)

Tell me the branding for frequency of 680 khz
SELECT "Branding" FROM table_31966 WHERE "Frequency" = '680 khz'
SELECT "Branding" FROM "table_31966" WHERE "Frequency" = '680 khz'