Who was the line judge at the game where Scott Green was referee?
CREATE TABLE "nfl_championships" (
  "game" text,
  "date" text,
  "referee" text,
  "umpire" text,
  "head_linesman" text,
  "line_judge" text,
  "field_judge" text,
  "back_judge" text
);
SELECT "line_judge" FROM "nfl_championships" WHERE "referee"='scott green';