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_26 (year_s__of_manufacture VARCHAR, type VARCHAR, quantity VARCHAR)
  ### Question:
  Which Year(s) of manufacture has a Type of 1b n2, and a Quantity of 10?
  ### Answer:
  SELECT year_s__of_manufacture FROM table_name_26 WHERE type = "1b n2" AND quantity = 10