In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

[Q]: 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 .
[A]: The GNU General Public License ( GPL ) is a computer software copyleft license .

[Q]: The Book of Revelation , often called the Book of Revelations , Revelation to John , the Apocalypse of John , The Revelation , or simply Revelation , the Revelation of Jesus Christ ( from its opening words ) or the Apocalypse , is the final book of the New Testament , and therefore also the final book of the Christian Bible .
[A]: The Book of Revelation , which is sometimes called Revelation to John , Apocalypse of John , or Revelation of Jesus Christ is the last book of the New Testament in the Bible .

[Q]: Using this system , Kornberg made the major discovery that transmission of gene regulatory signals to the RNA polymerase machinery is accomplished by an additional protein complex that they dubbed " Mediator " .
[A]:
Kornberg made the discovery that signals to the RNA are made by a complex of proteins that they called " mediator " .