What is the total number of Season(s), when Original Airdate is January 24, 1999, and when Year is less than 1999?
CREATE TABLE "writer" (
  "year" real,
  "show" text,
  "season" real,
  "episode" text,
  "episode_number" real,
  "original_airdate" text
);
SELECT COUNT("season") FROM "writer" WHERE "original_airdate"='january 24, 1999' AND "year"<1999;