CREATE TABLE table_64676 ("Rank:" FLOAT, "Premier:" TEXT, "Assumed Office:" TEXT, "Left Office:" TEXT, "TOTAL Time in Office:" TEXT)

What is the assumed Office date when the TOTAL Time in Office is 5years, 316days?
SELECT "Assumed Office:" FROM table_64676 WHERE "TOTAL Time in Office:" = '5years, 316days'
SELECT "Assumed Office:" FROM "table_64676" WHERE "TOTAL Time in Office:" = '5years, 316days'