What are the translator call letters for station call letters of KCOP-DT?
CREATE TABLE "media" (
  "translator_call_letters" text,
  "b_mountain_channel" text,
  "laurel_mountain_channel" text,
  "psip" text,
  "station_call_letters" text,
  "network_affiliation_id" text,
  "original_channel" text,
  "signal_quality" text
);
SELECT "translator_call_letters" FROM "media" WHERE "station_call_letters"='kcop-dt';