text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE table_name_9 (tonnage VARCHAR, ship VARCHAR, builder VARCHAR, original_operator VARCHAR)
  ### Question:
  What is the Tonnage that has builder AG Vulcan, and the original operator NDL, and the ship, Prinzess Irene?
  ### Answer:
  SELECT tonnage FROM table_name_9 WHERE builder = "ag vulcan" AND original_operator = "ndl" AND ship = "prinzess irene"