What is the ch# of dwlj-tv?
CREATE TABLE "rjtv_stations_nationwide_2nd_avenue" (
  "branding" text,
  "callsign" text,
  "ch_num" text,
  "power_k_w" text,
  "station_type" text,
  "coverage_transmitter_site" text
);
SELECT "ch_num" FROM "rjtv_stations_nationwide_2nd_avenue" WHERE "callsign"='DWLJ-TV';