CREATE TABLE table_55177 ("Year" FLOAT, "Event" CLOB, "Record" CLOB, "Athlete" CLOB, "Nationality" CLOB)

What event is before 1964 and has an athlete of l szl t bori gunnar nielsen?
SELECT "Event" FROM table_55177 WHERE "Year" < '1964' AND "Athlete" = 'lászló tábori gunnar nielsen'
SELECT "Event" FROM "table_55177" WHERE "Athlete" = 'lászló tábori gunnar nielsen' AND "Year" < '1964'