What result in 2006-07 has a result in 2010-11 of n/a, and the event is Colonial Square?
CREATE TABLE "grand_slam_record" (
  "event" text,
  "2006_07" text,
  "2007_08" text,
  "2008_09" text,
  "2009_10" text,
  "2010_11" text,
  "2011_12" text,
  "2012_13" text
);
SELECT "2006_07" FROM "grand_slam_record" WHERE "2010_11"='n/a' AND "event"='colonial square';