Question: What station was owned since 2011, and a channel (tv/rf) of 27?
SQL: SELECT "Station" FROM "2-1847523-2" WHERE "Owned Since" = 2011.0 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 "2-1847523-2" WHERE "Owned Since" > 1991.0 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 "2-1847523-2" WHERE "Owned Since" < 2011.0 AND "Affiliation" = 'ABC' AND "Channel ( TV / RF )" = '9 (22)';