What is the frequency of the processor with an sSpec number of sl3bn(kc0)sl3e9(kc0)?
CREATE TABLE "250_nm" (
  "model_number" text,
  "s_spec_number" text,
  "frequency" text,
  "l2_cache" text,
  "mult" text,
  "voltage" text,
  "socket" text,
  "release_date" text,
  "part_number_s" text,
  "release_price_usd" text
);
SELECT "frequency" FROM "250_nm" WHERE "s_spec_number"='sl3bn(kc0)sl3e9(kc0)';