CREATE TABLE "nfl_championships" (
  "game" text,
  "date" text,
  "referee" text,
  "umpire" text,
  "head_linesman" text,
  "line_judge" text,
  "field_judge" text,
  "back_judge" text
);

Question: Who is the head linesman of the game on 1 February 2009?
SQL: SELECT "head_linesman" FROM "nfl_championships" WHERE "date"='1 february 2009';

Question: What is the date of the game where the line judge was Bob Beeks, the head linesman was Jerry Bergman, and Paul Baetz was the back judge?
SQL: SELECT "date" FROM "nfl_championships" WHERE "line_judge"='bob beeks' AND "head_linesman"='jerry bergman' AND "back_judge"='paul baetz';

Question: Which game was on 14 January 1973?
SQL: SELECT "game" FROM "nfl_championships" WHERE "date"='14 january 1973';

Question: Who was the line judge at the game where Scott Green was referee?
SQL: SELECT "line_judge" FROM "nfl_championships" WHERE "referee"='scott green';

Question: Who is the head linesman at game xxxv?
SQL: SELECT "head_linesman" FROM "nfl_championships" WHERE "game"='xxxv';

Question: What game had Al Jury as field judge?
SQL: SELECT "game" FROM "nfl_championships" WHERE "field_judge"='al jury';