CREATE TABLE table_27052 ("Branding" TEXT, "Callsign" TEXT, "Ch. #" TEXT, "Power kW" TEXT, "Station Type" TEXT, "Location  ( Transmitter site ) " TEXT)

What is the callsign that has a station type of relay and a channel number of TV-2?
SELECT "Callsign" FROM table_27052 WHERE "Station Type" = 'Relay' AND "Ch. #" = 'TV-2'
SELECT "Callsign" FROM "table_27052" WHERE "Ch. #" = 'TV-2' AND "Station Type" = 'Relay'