What is the latest year rafael nadal was in the French Open, Roger Federer was in Wimbledon, and Roger Federer was in the Australian Open?
CREATE TABLE "federer_nadal_grand_slam_era" (
  "year" real,
  "australian_open" text,
  "french_open" text,
  "wimbledon" text,
  "us_open" text
);
SELECT MAX("year") FROM "federer_nadal_grand_slam_era" WHERE "french_open"='rafael nadal' AND "wimbledon"='roger federer' AND "australian_open"='roger federer';