Simplify the following text for a Grade 11 native English-speaking person.
Original: The 2016 Summer Olympics , officially known as the Games of the XXXI Olympiad , are a major international multi-sport event to be celebrated in the tradition of the Olympic Games , as governed by the International Olympic Committee ( IOC ) .
Simplified: The 2016 Summer Olympics , officially known as the Games of the XXXI Olympiad is a major international sports and cultural event .