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_54 (year INTEGER, title VARCHAR)
### Question:
What average year contains the title of machineries of joy vol. 4?
### Answer:
SELECT AVG(year) FROM table_name_54 WHERE title = "machineries of joy vol. 4"