CREATE TABLE "kansas" (
  "call_sign" text,
  "frequency_m_hz" real,
  "city_of_license" text,
  "erp_w" real,
  "class" text,
  "fcc_info" text
);

Question: What is the ERP W for K236AM?
SQL: SELECT "erp_w" FROM "kansas" WHERE "call_sign"='k236am';

Question: What is the average frequency in MHz for stations with an ERP W of 170?
SQL: SELECT AVG("frequency_m_hz") FROM "kansas" WHERE "erp_w"=170;

Question: What is K236AM's lowest frequency in MHz?
SQL: SELECT MIN("frequency_m_hz") FROM "kansas" WHERE "call_sign"='k236am';

Question: What class is assigned to frequencies lower than 90.5?
SQL: SELECT "class" FROM "kansas" WHERE "frequency_m_hz"<90.5;

Question: What class is assigned to frequencies larger than 89.3 with an ERP W of 250?
SQL: SELECT "class" FROM "kansas" WHERE "frequency_m_hz">89.3 AND "erp_w"=250;