What is the win percentage when 2011 shows 1r in the Paris tournament?
CREATE TABLE "singles_performance_timeline" (
  "tournament" text,
  "2008" text,
  "2009" text,
  "2010" text,
  "2011" text,
  "2012" text,
  "win_pct" text
);
SELECT "win_pct" FROM "singles_performance_timeline" WHERE "2011"='1r' AND "tournament"='paris';