CREATE TABLE table_15412 ("Name" CLOB, "Entered Office" CLOB, "Left Office" CLOB, "Party" CLOB, "First Minister" CLOB)

What is the Left Office of cabinet secretary for culture and external affairs named?
SELECT "Name" FROM table_15412 WHERE "Left Office" = 'cabinet secretary for culture and external affairs'
SELECT "Name" FROM "table_15412" WHERE "Left Office" = 'cabinet secretary for culture and external affairs'