CREATE TABLE table_46599 ("Tournament" TEXT, "1983" TEXT, "1984" TEXT, "1985" TEXT, "1986" TEXT, "1987" TEXT, "1988" TEXT, "1989" TEXT, "1990" TEXT, "Career SR" TEXT)

What was the 1989 result for the tournament with 1984 of a, 1985 of a, and 1990 of a?
SELECT "1989" FROM table_46599 WHERE "1984" = 'a' AND "1985" = 'a' AND "1990" = 'a'
SELECT "1989" FROM "table_46599" WHERE "1984" = 'a' AND "1985" = 'a' AND "1990" = 'a'