CREATE TABLE table_4977 ("Tournament" TEXT, "2005" TEXT, "2006" TEXT, "2007" TEXT, "2008" TEXT, "2009" TEXT, "2012" TEXT, "2013" TEXT)

What is the value in 2006 when it is Grand Slam Tournaments in 2012?
SELECT "2006" FROM table_4977 WHERE "2012" = 'grand slam tournaments'
SELECT "2006" FROM "table_4977" WHERE "2012" = 'grand slam tournaments'