CREATE TABLE table_31717 ("Frequency" TEXT, "Call sign" TEXT, "Branding" TEXT, "Format" TEXT, "Owner" TEXT)

Who is the owner with a call sign of cjgx?
SELECT "Owner" FROM table_31717 WHERE "Call sign" = 'cjgx'
SELECT "Owner" FROM "table_31717" WHERE "Call sign" = 'cjgx'