Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_69919 ( "Deputy Prime Minister" text, "Took office" real, "Left office" text, "Prime Minister" text, "Term" text, "Party" text )

### Question ###
Which deputy prime minister left office in 1981?

### Accurate SQL ###

SELECT "Deputy Prime Minister" FROM table_69919 WHERE "Left office" = '1981'