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.

[Q]: The eighteenth edition ( 2012 ) was edited by poet , critic , and editor Geoffrey O 'Brien .
[A]: 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 ) .


[Q]: In the " Prose Edda " book " Gylfaginning " , Elli defeats Thor in a wrestling match .
[A]: In Norse mythology ( a subset of Germanic mythology ) , Elli ( Old Norse " old age " ) is a personification of old age who , in the " Prose Edda " book " Gylfaginning " , defeats Thor in a wrestling match .


[Q]: The activation energy of a chemical reaction is the minimum energy that is needed to make the reaction happen .
[A]:
In chemistry and physics , activation energy is the energy which must be provided to a chemical or nuclear system with potential reactants to result in : a chemical reaction , nuclear reaction , or various other physical phenomena .


