Which 1994 has a 1998 of 0–1?
CREATE TABLE "women_s_doubles_performance_timeline" (
  "tournament" text,
  "1988" text,
  "1989" text,
  "1990" text,
  "1991" text,
  "1992" text,
  "1993" text,
  "1994" text,
  "1995" text,
  "1996" text,
  "1997" text,
  "1998" text
);
SELECT "1994" FROM "women_s_doubles_performance_timeline" WHERE "1998"='0–1';