Table: radio_stations_7
Columns: call_sign
frequency
city_of_license
licensee
format

Question: When 1180 am is the frequency how many call signs are there?
SQL: SELECT COUNT("call_sign") FROM radio_stations_7 WHERE "frequency" = '1180 AM'

Question: When portsmouth is the city of license who is the licensee?
SQL: SELECT "licensee" FROM radio_stations_7 WHERE "city_of_license" = 'Portsmouth'

Question: When 790 am is the frequency what is the format?
SQL: SELECT "format" FROM radio_stations_7 WHERE "frequency" = '790 AM'

Question: When 90.7 fm is the frequency who is the licensee?
SQL: SELECT "licensee" FROM radio_stations_7 WHERE "frequency" = '90.7 FM'