What was held in 2009/10 when 2004/05 was Variant Format Tournaments?
CREATE TABLE "performance_and_rankings_timeline" (
  "2003_04" text,
  "2004_05" text,
  "2007_08" text,
  "2009_10" text,
  "2010_11" text,
  "2011_12" text,
  "2012_13" text
);
SELECT "2009_10" FROM "performance_and_rankings_timeline" WHERE "2004_05"='variant format tournaments';