CREATE TABLE table_64981 ("Tournament" TEXT, "1986" TEXT, "1988" TEXT, "1989" TEXT, "1990" TEXT, "1991" TEXT, "1992" TEXT, "1993" TEXT, "1994" TEXT, "1995" TEXT, "1996" TEXT, "1997" TEXT, "1998" TEXT, "1999" TEXT)

What's the 1986 if 1991 has a QF and 1998 has a 3R?
SELECT "1986" FROM table_64981 WHERE "1991" = 'qf' AND "1998" = '3r'
SELECT "1986" FROM "table_64981" WHERE "1991" = 'qf' AND "1998" = '3r'