Question: What is the region 4 release that has July 20, 2009 as the region 2?
SQL: SELECT "Region 4 release" FROM "2-14618098-2" WHERE "Region 2 release" = 'July 20, 2009';

Question: What is the region 1 release that has July 20, 2009 as the region 2?
SQL: SELECT "Region 1 release" FROM "2-14618098-2" WHERE "Region 2 release" = 'July 20, 2009';

Question: What is the average episode that has September 11, 2007 as a region 1?
SQL: SELECT AVG("Episodes") FROM "2-14618098-2" WHERE "Region 1 release" = 'September 11, 2007';