What is the Frequency for Model Number c3 850?
CREATE TABLE "ezra_ezra_t_130_nm" (
  "model_number" text,
  "frequency" text,
  "l2_cache" text,
  "front_side_bus" text,
  "multiplier" text,
  "voltage" text,
  "socket" text
);
SELECT "frequency" FROM "ezra_ezra_t_130_nm" WHERE "model_number"='c3 850';