Table: radio_stations_9
Columns: call_sign
frequency_mhz
city_of_license
erp_w
class
fcc_info

Question: Frequency MHz of 88.7 had what average erp w?
SQL: SELECT AVG("erp_w") FROM radio_stations_9 WHERE "frequency_mhz" = 88.7

Question: Frequency MHz smaller than 95.3, and a Call sign of k234ag is what class?
SQL: SELECT "class" FROM radio_stations_9 WHERE "frequency_mhz" < 95.3 AND "call_sign" = 'k234ag'

Question: Call sign of k231bg has what sum of erp w?
SQL: SELECT SUM("erp_w") FROM radio_stations_9 WHERE "call_sign" = 'k231bg'

Question: Class of d, and a Frequency MHz smaller than 107.7, and a ERP W smaller than 232 has what call sign?
SQL: SELECT "call_sign" FROM radio_stations_9 WHERE "class" = 'd' AND "frequency_mhz" < 107.7 AND "erp_w" < 232

Question: ERP W that has a Class of d, and a Call sign of k299ar is what total number?
SQL: SELECT COUNT("erp_w") FROM radio_stations_9 WHERE "class" = 'd' AND "call_sign" = 'k299ar'