Table: radio_stations_39
Columns: call_sign
frequency_mhz
city_of_license
erp_w
class
fcc_info

Question: What is the frequency for the city of Lamar, Colorado?
SQL: SELECT AVG("frequency_mhz") FROM radio_stations_39 WHERE "city_of_license" = 'lamar, colorado'

Question: What is the average ERP W for callsign K207BK?
SQL: SELECT AVG("erp_w") FROM radio_stations_39 WHERE "call_sign" = 'k207bk'

Question: Which callsign has ERP W of 99 and a frequency of greater than 88.7MHz?
SQL: SELECT "call_sign" FROM radio_stations_39 WHERE "frequency_mhz" > 88.7 AND "erp_w" = 99

Question: Which city has ERP W under 14 and a frequency over 93.7MHz?
SQL: SELECT "city_of_license" FROM radio_stations_39 WHERE "erp_w" < 14 AND "frequency_mhz" > 93.7