CREATE TABLE table_40488 ("Tournament" CLOB, "2004" CLOB, "2005" CLOB, "2006" CLOB, "2007" CLOB)

What is the 2007 that has a grand slam tournaments in 2006.
SELECT "2007" FROM table_40488 WHERE "2006" = 'grand slam tournaments'
SELECT "2007" FROM "table_40488" WHERE "2006" = 'grand slam tournaments'