Round 1 of 71 has how many highest money?
CREATE TABLE "performance_at_the_pga_grand_slam_of_gol" (
  "year" real,
  "round_1" text,
  "round_2" text,
  "place" real,
  "money" real
);
SELECT MAX("money") FROM "performance_at_the_pga_grand_slam_of_gol" WHERE "round_1"='71';