CREATE TABLE table_46600 ("Tournament" TEXT, "1983" TEXT, "1984" TEXT, "1985" TEXT, "1986" TEXT, "1987" TEXT, "1988" TEXT, "1989" TEXT, "1990" TEXT, "Career SR" TEXT)

What was the 1987 result for the tournament with 1986 result of 3R and 1989 of A?
SELECT "1987" FROM table_46600 WHERE "1989" = 'a' AND "1986" = '3r'
SELECT "1987" FROM "table_46600" WHERE "1986" = '3r' AND "1989" = 'a'