CREATE TABLE table_65084 ("City of license /Market" TEXT, "Station" TEXT, "Channel  (  TV / RF  ) " TEXT, "Owned Since" FLOAT, "Affiliation" TEXT)

What affiliation has an owned since larger than 1991, and also has a channel (tv/rf) of 42?
SELECT "Affiliation" FROM table_65084 WHERE "Owned Since" > '1991' AND "Channel ( TV / RF )" = '42'
SELECT "Affiliation" FROM "table_65084" WHERE "Channel ( TV / RF )" = '42' AND "Owned Since" > '1991'