Original sentence: The channel was created by Austrailian-American media magnate Rupert Murdoch, who hired Roger Ailes, who was then President of CNBC and former Republican campaign operative for President Ronald Reagan and George W
Edited sentence: Presidents Ronald Reagan and George W.The channel was created by Austrailian-American media magnate Rupert Murdoch, who hired Roger Ailes, then President of CNBC and a former Republican campaign operative for U