Which 2009/10 has a 2005/06 of not held, and a 2010/11 of not held?
CREATE TABLE "performance_and_rankings_timeline" (
  "2005_06" text,
  "2006_07" text,
  "2007_08" text,
  "2008_09" text,
  "2009_10" text,
  "2010_11" text,
  "2011_12" text,
  "2012_13" text
);
SELECT "2009_10" FROM "performance_and_rankings_timeline" WHERE "2005_06"='not held' AND "2010_11"='not held';