What position did the person who was with the grizzlies in 1998-1999 play?
CREATE TABLE "w" (
  "player" text,
  "nationality" text,
  "position" text,
  "years_for_grizzlies" text,
  "school_club_team" text
);
SELECT "position" FROM "w" WHERE "years_for_grizzlies"='1998-1999';