Table: peak_copper_countries
Columns: country
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011

Question: What is the least 2009 that has 2005 littler than 640, and 2011 of 425, and 2003 littler than 500?
SQL: SELECT MIN("2009") FROM peak_copper_countries WHERE "2005" < 640 AND "2011" = 425 AND "2003" < 500