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

Question: Which Frequency MHz has an ERP W larger than 4, and a Call sign of w218ap?
SQL: SELECT "frequency_m_hz" FROM "repeaters" WHERE "erp_w">4 AND "call_sign"='w218ap';

Question: Which City of license has a Frequency MHz of 91.5 fm?
SQL: SELECT "city_of_license" FROM "repeaters" WHERE "frequency_m_hz"='91.5 fm';

Question: Which City of license has a Call sign of w220ba?
SQL: SELECT "city_of_license" FROM "repeaters" WHERE "call_sign"='w220ba';

Question: Which ERP W has a Frequency MHz of 89.3 fm?
SQL: SELECT MAX("erp_w") FROM "repeaters" WHERE "frequency_m_hz"='89.3 fm';