Which 1990s 1992 was 3r?
CREATE TABLE "mixed_doubles" (
  "tournament" text,
  "1989" text,
  "1990" text,
  "1991" text,
  "1992" text,
  "1993" text,
  "1994" text,
  "1995" text,
  "1996" text,
  "1997" text,
  "career_w_l" text
);
SELECT "1990" FROM "mixed_doubles" WHERE "1992"='3r';