Table: karin_knapp_grand_slam
Columns: tournament
2006
2007
2008
2009
2010
2011
2012
2013

Question: What's the value for 2007 when 2011 is a and 2009 is q2?
SQL: SELECT "2007" FROM karin_knapp_grand_slam WHERE "2011" = 'a' AND "2009" = 'q2'