user: Question: Whose reign began in Vietnam and ended in October 1005?
Columns: ['Name', 'Country', 'Reign began', 'Reign ended', 'Length']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Pharaoh Seth', 'Egypt', 'c.1755 BC', 'c.1755 BC', '6 days']
SQL:

assistant: SELECT "Reign began" FROM "Table" WHERE "Country" = 'Vietnam' AND "Reign ended" = 'October 1005';