Detailed Instructions: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Problem:The eighteenth edition ( 2012 ) was edited by poet , critic , and editor Geoffrey O 'Brien .
Solution:
The eighteenth edition , which came out in 2012 , was edited by poet , critic , and editor Geoffrey O 'Brien ( O 'Brien is also the editor-in-chief of the Library of America ) .