What's the 2012 during Wimbledon and had a Q3 in 2008?
CREATE TABLE "singles_performance_timeline" (
  "tournament" text,
  "2008" text,
  "2009" text,
  "2010" text,
  "2011" text,
  "2012" text
);
SELECT "2012" FROM "singles_performance_timeline" WHERE "2008"='q3' AND "tournament"='wimbledon';