CREATE TABLE "television_stations" (
  "city_of_license_market" text,
  "station" text,
  "channel_tv_rf" text,
  "owned_since" real,
  "affiliation" text
);

Question: What station was owned since 2011, and a channel (tv/rf) of 27?
SQL: SELECT "station" FROM "television_stations" WHERE "owned_since"=2011 AND "channel_tv_rf"='27';

Question: What affiliation has an owned since larger than 1991, and also has a channel (tv/rf) of 42?
SQL: SELECT "affiliation" FROM "television_stations" WHERE "owned_since">1991 AND "channel_tv_rf"='42';

Question: What city of license/market has an owned since before 2011,and a affiliation of abc and channel (tv/rf) of 9 (22)?
SQL: SELECT "city_of_license_market" FROM "television_stations" WHERE "owned_since"<2011 AND "affiliation"='abc' AND "channel_tv_rf"='9 (22)';