CREATE TABLE "ptv_stations_nationwide" (
  "branding" text,
  "callsign" text,
  "ch_num" text,
  "power_k_w" text,
  "station_type" text,
  "location_transmitter_site" text
);

Question: What is the callsign that has a station type of relay and a channel number of TV-2?
SQL: SELECT "callsign" FROM "ptv_stations_nationwide" WHERE "station_type"='Relay' AND "ch_num"='TV-2';

Question: What is the station type of DWZM-TV?
SQL: SELECT "station_type" FROM "ptv_stations_nationwide" WHERE "callsign"='DWZM-TV';

Question: What is the power in kilowatts of TV-12?
SQL: SELECT "power_k_w" FROM "ptv_stations_nationwide" WHERE "ch_num"='TV-12';

Question: What is the power in KW of the transmitter situated in Borongan?
SQL: SELECT "power_k_w" FROM "ptv_stations_nationwide" WHERE "location_transmitter_site"='Borongan';

Question: What is the channel number that has a branding of PTV 4 Laoag?
SQL: SELECT "ch_num" FROM "ptv_stations_nationwide" WHERE "branding"='PTV 4 Laoag';

Question: What is the power in KW that has a station type of relay and a callsign of DXCL-TV?
SQL: SELECT "power_k_w" FROM "ptv_stations_nationwide" WHERE "station_type"='Relay' AND "callsign"='DXCL-TV';