What are the years when the grizzlies had a point guard who attended the school/club Florida?
CREATE TABLE "w" (
  "player" text,
  "nationality" text,
  "position" text,
  "years_for_grizzlies" text,
  "school_club_team" text
);
SELECT "years_for_grizzlies" FROM "w" WHERE "position"='point guard' AND "school_club_team"='florida';