CREATE TABLE table_38648 ("Tournament" CLOB, "2006" CLOB, "2007" CLOB, "2008" CLOB, "2009" CLOB, "2010" CLOB, "2011" CLOB, "2012" CLOB)

Which 2009 has a 2008 of wta premier mandatory tournaments?
SELECT "2009" FROM table_38648 WHERE "2008" = 'wta premier mandatory tournaments'
SELECT "2009" FROM "table_38648" WHERE "2008" = 'wta premier mandatory tournaments'