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_61919 ( "Rank:" real, "Prime Minister:" text, "Party:" text, "Assumed Office:" text, "Left Office:" text, "TOTAL Time in Office:" text )

### Question ###
What is the total time in office of the prime minister from the liberal party and left office in 19 December 1967?

### Accurate SQL ###

SELECT "TOTAL Time in Office:" FROM table_61919 WHERE "Party:" = 'liberal' AND "Left Office:" = '19 december 1967'