CREATE TABLE "team_representatives" (
  "player" text,
  "w_l_total" text,
  "w_l_singles" text,
  "w_l_doubles" text,
  "ties" real,
  "debut" real,
  "years_played" real
);

Question: Tell me the WL doubles with a debut of 1999
SQL: SELECT "w_l_doubles" FROM "team_representatives" WHERE "debut"=1999;