Which Level has a Leading scorer 1 of tom greaves 8?
CREATE TABLE "league_and_cup_history" (
  "season" text,
  "league_contested" text,
  "level" real,
  "league_position" text,
  "avg_home_attendance_1" text,
  "fa_cup" text,
  "fa_trophy" text,
  "leading_scorer_1" text
);
SELECT "level" FROM "league_and_cup_history" WHERE "leading_scorer_1"='tom greaves 8';