CREATE TABLE table_422 ("Symbol" TEXT, "Description" TEXT, "Success" TEXT, "Date of completion" TEXT, "Deadline for completion" TEXT)

what's the success where deadline for completion is october 7, 2007
SELECT "Success" FROM table_422 WHERE "Deadline for completion" = 'October 7, 2007'
SELECT "Success" FROM "table_422" WHERE "Deadline for completion" = 'October 7, 2007'