Table: tv_stations_5
Columns: city_of_license_market
station
channel_tv_rf
owned_since
affiliation

Question: What station was owned since 2011, and a channel (tv/rf) of 27?
SQL: SELECT "station" FROM tv_stations_5 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 tv_stations_5 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 tv_stations_5 WHERE "owned_since" < 2011 AND "affiliation" = 'abc' AND "channel_tv_rf" = '9 (22)'