CREATE TABLE table_37948 ("Tournament" TEXT, "1998" TEXT, "1999" TEXT, "2000" TEXT, "2001" TEXT, "2002" TEXT, "2003" TEXT, "2004" TEXT, "2005" TEXT, "2006" TEXT, "2007" TEXT, "2008" TEXT, "2009" TEXT, "2010" TEXT, "2011" TEXT)

Which 2007 had a 2009 taht was qf when its 2000 was a?
SELECT "2007" FROM table_37948 WHERE "2009" = 'qf' AND "2000" = 'a'
SELECT "2007" FROM "table_37948" WHERE "2000" = 'a' AND "2009" = 'qf'