What is the 2009-10 result that has a 2006-07 result of n/a?
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 "2009_10" FROM "grand_slam_record" WHERE "2006_07"='n/a';