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_59612 ( "Ship" text, "Tonnage" text, "Builder" text, "Original Operator" text, "Fate" text )

### Question ###
Who is the original operator for the AG Vulcan builder and the Prinzess Irene ship?

### Accurate SQL ###

SELECT "Original Operator" FROM table_59612 WHERE "Builder" = 'ag vulcan' AND "Ship" = 'prinzess irene'