Table: radio_stations_48
Columns: frequency
call_sign
branding
format
owner

Question: What is the frequency of the station owned by the Canadian Broadcasting Corporation and branded as CBC Radio One?
SQL: SELECT "frequency" FROM radio_stations_48 WHERE "owner" = 'canadian broadcasting corporation' AND "branding" = 'cbc radio one'

Question: What is the frequency of the soft adult contemporary stations?
SQL: SELECT "frequency" FROM radio_stations_48 WHERE "format" = 'soft adult contemporary'

Question: Who owns the station with the frequency FM 92.1?
SQL: SELECT "owner" FROM radio_stations_48 WHERE "frequency" = 'fm 92.1'

Question: What is the branding of the FM 97.7 station owned by the Canadian Broadcasting Corporation?
SQL: SELECT "branding" FROM radio_stations_48 WHERE "owner" = 'canadian broadcasting corporation' AND "frequency" = 'fm 97.7'