CREATE TABLE "round_four" (
  "pick_num" real,
  "player" text,
  "nationality" text,
  "position" text,
  "nhl_team" text,
  "team_from" text,
  "league_from" text
);

Question: Which NHL team chose an American player from the United States Hockey League?
SQL: SELECT "nhl_team" FROM "round_four" WHERE "nationality"='united states' AND "league_from"='united states hockey league';

Question: What is the nationality of player Jani Hakanpaa?
SQL: SELECT "nationality" FROM "round_four" WHERE "player"='jani hakanpaa';

Question: From which league is the player chosen by the Atlanta Thrashers (from Dallas) 6?
SQL: SELECT "league_from" FROM "round_four" WHERE "nhl_team"='atlanta thrashers (from dallas) 6';