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.

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

[EX Q]: In mathematics a loss function or cost function is a mathematical function that maps an event , or the values of one or more variables onto a real number .
[EX A]: In mathematical optimization and decision theory , a loss function or cost function is a function that maps an event or values of one or more variables onto a real number intuitively representing some " cost " associated with the event .

[EX Q]: Each group of bivalves tends to have distinctive hinge teeth .
[EX A]:
Each related group of bivalves tends to have distinctive hinge teeth , and because of this , examining the arrangement of the hinge teeth in a bivalve shell is often essential for identification and classification .