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]: Many people call all sparkling wines " champagne " but according to trade laws , only sparkling wine from the Champagne region can be called champagne .
[A]: Many people use the term " Champagne " as a generic term for sparkling wine but in some countries , it is illegal to label any product " Champagne " unless it both comes from the Champagne region and is produced under the rules of the appellation .

[Q]: The GNU General Public License ( GPL ) is a computer software copyleft license .
[A]: The GNU General Public License ( GNU GPL or GPL ) is a widely-used free software license , which guarantees end users the freedom to run , study , share and modify the software .

[Q]: A software bug is a problem with the code in a computer program which makes it not work properly .
[A]:
A software bug is an error , flaw , failure or fault in a computer program or system that causes it to produce an incorrect or unexpected result , or to behave in unintended ways .