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

Question: Which player is pick 64?
SQL: SELECT "player" FROM "round_four" WHERE "pick_num"=64;

Question: Which player is the centre for the Detroit Red Wings?
SQL: SELECT "player" FROM "round_four" WHERE "position"='Centre' AND "nhl_team"='Detroit Red Wings';

Question: How many positions drafted for the Minnesota North Stars?
SQL: SELECT COUNT("position") FROM "round_four" WHERE "nhl_team"='Minnesota North Stars';