4214
Vol. 1 and 4 of the series feature all-new stories ( published in 1996 and 2013 – 14 respectively ) , while vol. 2 and 3 contain stories from the backup feature of the " Batman : Gotham Knights " comic book .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None