Which ERP W is the highest one that has a Frequency MHz larger than 88.3, and a City of license of lewis, kansas?
CREATE TABLE "translators" (
  "call_sign" text,
  "frequency_m_hz" real,
  "city_of_license" text,
  "erp_w" real,
  "class" text,
  "fcc_info" text
);
SELECT MAX("erp_w") FROM "translators" WHERE "frequency_m_hz">88.3 AND "city_of_license"='lewis, kansas';