Table: cbf_fm_stations
Columns: city_of_license
identifier
frequency
power
class
recnet

Question: What's the class when the identifier is cbf-fm-14?
SQL: SELECT "class" FROM cbf_fm_stations WHERE "identifier" = 'cbf-fm-14'

Question: What's the frequency when the identifier is cbf-fm-9?
SQL: SELECT "frequency" FROM cbf_fm_stations WHERE "identifier" = 'cbf-fm-9'

Question: What's the RECNet when the identifier is cbf-fm-20?
SQL: SELECT "recnet" FROM cbf_fm_stations WHERE "identifier" = 'cbf-fm-20'

Question: What's the RECNet when the power is 199 watts?
SQL: SELECT "recnet" FROM cbf_fm_stations WHERE "power" = '199 watts'

Question: What's the frequency when the identifier is cbf-fm-14 having a class of A?
SQL: SELECT "frequency" FROM cbf_fm_stations WHERE "class" = 'a' AND "identifier" = 'cbf-fm-14'