Which Years in Orlando has a Nationality of united states, and a Player of doug overton?
CREATE TABLE "o" (
  "player" text,
  "nationality" text,
  "position" text,
  "years_in_orlando" text,
  "school_club_team" text
);
SELECT "years_in_orlando" FROM "o" WHERE "nationality"='united states' AND "player"='doug overton';