Who is the player from United States who play in year 2003-06 in Toronto?
CREATE TABLE "r" (
  "player" text,
  "nationality" text,
  "position" text,
  "years_in_toronto" text,
  "school_club_team" text
);
SELECT "player" FROM "r" WHERE "nationality"='united states' AND "years_in_toronto"='2003-06';