How many yards per attempt were there when total yards were 513?
CREATE TABLE "top_10_games_of_400_or_more_yards_by_cat" (
  "rank" text,
  "rating" text,
  "completion_percentage" text,
  "touchdown_percentage" text,
  "yards_per_attempt" text,
  "total_yards" text
);
SELECT "yards_per_attempt" FROM "top_10_games_of_400_or_more_yards_by_cat" WHERE "total_yards"='513';