What event is before 1964 and has an athlete of lászló tábori gunnar nielsen?
CREATE TABLE "period_of_differently_named_meetings" (
  "year" real,
  "event" text,
  "record" text,
  "athlete" text,
  "nationality" text
);
SELECT "event" FROM "period_of_differently_named_meetings" WHERE "year"<1964 AND "athlete"='lászló tábori gunnar nielsen';