Table: radio_stations_5
Columns: frequency
call_sign
branding
format
owner
language_rebroadcast

Question: When classic hits 102.1 cjcy is the branding who is the owner?
SQL: SELECT "owner" FROM radio_stations_5 WHERE "branding" = 'Classic Hits 102.1 CJCY'

Question: When hot adult contemporary is the format what is the call sign?
SQL: SELECT "call_sign" FROM radio_stations_5 WHERE "format" = 'hot adult contemporary'

Question: When vista radio is the owner how many call signs are there?
SQL: SELECT COUNT("call_sign") FROM radio_stations_5 WHERE "owner" = 'Vista Radio'

Question: When fm 97.3 is the frequency how many formats are there?
SQL: SELECT COUNT("format") FROM radio_stations_5 WHERE "frequency" = 'FM 97.3'

Question: When vista radio is the owner what is the frequency? 
SQL: SELECT "frequency" FROM radio_stations_5 WHERE "owner" = 'Vista Radio'