CREATE TABLE "singles_performance_timeline" (
  "tournament" text,
  "2008" text,
  "2009" text,
  "2010" text,
  "2011" text,
  "2012" text
);

Question: What is the 2012 value at the Grand Slam Tournaments?
SQL: SELECT "2012" FROM "singles_performance_timeline" WHERE "tournament"='grand slam tournaments';

Question: What is the tournament with A in 2011?
SQL: SELECT "tournament" FROM "singles_performance_timeline" WHERE "2011"='a';

Question: What is the 2010 value with A in 2009 and A in 2008 in the Australian Open?
SQL: SELECT "2010" FROM "singles_performance_timeline" WHERE "2009"='a' AND "2008"='a' AND "tournament"='australian open';

Question: What is the 2012 value with A in 2010 at the Tournament of Wimbledon?
SQL: SELECT "2012" FROM "singles_performance_timeline" WHERE "2010"='a' AND "tournament"='wimbledon';

Question: What is the 2009 value with q1 in 2010?
SQL: SELECT "2009" FROM "singles_performance_timeline" WHERE "2010"='q1';