What tournament had an A in 2012 and Q2 in 2010?
CREATE TABLE "singles_performance_timeline" (
  "tournament" text,
  "2008" text,
  "2009" text,
  "2010" text,
  "2011" text,
  "2012" text
);
SELECT "tournament" FROM "singles_performance_timeline" WHERE "2012"='a' AND "2010"='q2';