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_20892 ( "Archbishop" text, "Born" text, "Ordained Priest" text, "Ordained Bishop" text, "Appointed Archbishop" text, "Vacated throne" text, "Died" text )

### Question ###
When was the archbishop who vacated the throne on August 18, 1885 ordained as a priest?

### Accurate SQL ###

SELECT "Ordained Priest" FROM table_20892 WHERE "Vacated throne" = 'August 18, 1885'