What is the 2011 value of the paris masters, which had A in 2008, A in 2012, A in 2009?
CREATE TABLE "singles_performance_timeline" (
  "tournament" text,
  "2008" text,
  "2009" text,
  "2010" text,
  "2011" text,
  "2012" text
);
SELECT "2011" FROM "singles_performance_timeline" WHERE "2008"='a' AND "2012"='a' AND "2009"='a' AND "tournament"='paris masters';