What year did the ship Europa, have the dates of 14 – 23 October?
CREATE TABLE "westbound_record_breakers_blue_riband_ho" (
  "ship" text,
  "year" real,
  "dates" text,
  "line" text,
  "from" text,
  "distance" text,
  "days_hours_minutes" text,
  "speed" text
);
SELECT AVG("year") FROM "westbound_record_breakers_blue_riband_ho" WHERE "ship"='europa' AND "dates"='14 – 23 october';