Table: radio_stations_45
Columns: call_sign
frequency_mhz
city_of_license
erp_w
class
fcc_info

Question: What is the frequency MHz of the ERP W's greater than 250?
SQL: SELECT AVG("frequency_mhz") FROM radio_stations_45 WHERE "erp_w" > 250

Question: What is the call sign of the MHz Frequency less than 94.9 and an ERP W of 170?
SQL: SELECT "call_sign" FROM radio_stations_45 WHERE "frequency_mhz" < 94.9 AND "erp_w" = 170

Question: What is the FCC info for the city of Tribune, Kansas?
SQL: SELECT "fcc_info" FROM radio_stations_45 WHERE "city_of_license" = 'tribune, kansas'

Question: What is the city of license with an ERP W less than 170?
SQL: SELECT "city_of_license" FROM radio_stations_45 WHERE "erp_w" < 170

Question: What is the smallest ERP W with a frequency MHz of 94.9?
SQL: SELECT MIN("erp_w") FROM radio_stations_45 WHERE "frequency_mhz" = 94.9

Question: What is the ERP W of a Frequency MHz greater than 89.5 in the city of Washburn, Texas?
SQL: SELECT "erp_w" FROM radio_stations_45 WHERE "frequency_mhz" > 89.5 AND "city_of_license" = 'washburn, texas'