What is 1993, when 1992 is "SF", and when Tournament is "Paris"?
CREATE TABLE "singles_performance_timeline" (
  "tournament" text,
  "1990" text,
  "1991" text,
  "1992" text,
  "1993" text,
  "1994" text,
  "1995" text,
  "1996" text
);
SELECT "1993" FROM "singles_performance_timeline" WHERE "1992"='sf' AND "tournament"='paris';