What is the 1998 value with A in 1995, A in 1993, and 1r in 1996?
CREATE TABLE "doubles_performance_timeline" (
  "tournament" text,
  "1990" text,
  "1991" text,
  "1992" text,
  "1993" text,
  "1994" text,
  "1995" text,
  "1996" text,
  "1997" text,
  "1998" text,
  "career_sr" text,
  "career_win_loss" text
);
SELECT "1998" FROM "doubles_performance_timeline" WHERE "1995"='a' AND "1993"='a' AND "1996"='1r';