Table: radio_stations_43
Columns: call_sign
frequency_mhz
city_of_license
erp_w
fcc_info

Question: Which Frequency MHz has an ERP W larger than 4, and a Call sign of w218ap?
SQL: SELECT "frequency_mhz" FROM radio_stations_43 WHERE "erp_w" > 4 AND "call_sign" = 'w218ap'

Question: Which City of license has a Frequency MHz of 91.5 fm?
SQL: SELECT "city_of_license" FROM radio_stations_43 WHERE "frequency_mhz" = '91.5 fm'

Question: Which City of license has a Call sign of w220ba?
SQL: SELECT "city_of_license" FROM radio_stations_43 WHERE "call_sign" = 'w220ba'

Question: Which ERP W has a Frequency MHz of 89.3 fm?
SQL: SELECT MAX("erp_w") FROM radio_stations_43 WHERE "frequency_mhz" = '89.3 fm'