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_13 (year_s__of_manufacture VARCHAR, quantity VARCHAR, type VARCHAR)
### Question:
Which Year(s) of manufacture has a Quantity of 2, and a Type of b n2t?
### Answer:
SELECT year_s__of_manufacture FROM table_name_13 WHERE quantity = 2 AND type = "b n2t"