CREATE TABLE table_11838 ("Name" TEXT, "Country" TEXT, "Reign began" TEXT, "Reign ended" TEXT, "Length" TEXT)

When did Pharaoh Seth's reign end?
SELECT "Reign ended" FROM table_11838 WHERE "Name" = 'pharaoh seth'
SELECT "Reign ended" FROM "table_11838" WHERE "Name" = 'pharaoh seth'