Simplify the following text for a Grade 3 native English-speaking person.
Original: Milton Keynes Dons Football Club ( ; usually abbreviated to MK Dons ) is an English professional football club founded in 2004 and based since 2007 at Stadium : mk , Milton Keynes , Buckinghamshire .
Simplified: Milton Keynes Dons F.C. are an English football club . They are also known as MK Dons .