CREATE TABLE table_47637 ("Date" TEXT, "Venue" TEXT, "Score" TEXT, "Result" TEXT, "Competition" TEXT)

What was the Venue of the 2009 Gulf Cup of Nations?
SELECT "Venue" FROM table_47637 WHERE "Competition" = '2009 gulf cup of nations'
SELECT "Venue" FROM "table_47637" WHERE "Competition" = '2009 gulf cup of nations'