Table: radio_stations_6
Columns: call_sign
frequency_mhz
city_of_license
erp_w
class
fcc_info

Question: What is the highest ERP W of an 89.1 frequency translator?
SQL: SELECT MAX("erp_w") FROM radio_stations_6 WHERE "frequency_mhz" = 89.1

Question: What is the class of the translator with 10 ERP W and a call sign of w273bl?
SQL: SELECT "class" FROM radio_stations_6 WHERE "erp_w" = 10 AND "call_sign" = 'w273bl'

Question: What is the FCC info of the translator with an Irmo, South Carolina city license?
SQL: SELECT "fcc_info" FROM radio_stations_6 WHERE "city_of_license" = 'irmo, south carolina'

Question: What is the call sign of the translator in Spring Valley, Nevada?
SQL: SELECT "call_sign" FROM radio_stations_6 WHERE "city_of_license" = 'spring valley, nevada'

Question: What is the call sign of the translator with an ERP W greater than 38 and a city license from Great Falls, Montana?
SQL: SELECT "call_sign" FROM radio_stations_6 WHERE "erp_w" > 38 AND "city_of_license" = 'great falls, montana'