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