Premise: The 2016 Summer Olympics ( Jogos Olímpicos de Verão de 2016 ) , officially known as the Games of the XXXI Olympiad and commonly known as Rio 2016 , was a major international multi-sport event held in Rio de Janeiro , Brazil , from 5 August to 21 August 2016 . The host city Rio de Janeiro was announced at the 121st IOC Session in Copenhagen , Denmark , on 2 October 2009 .
Hypothesis: The 2016 Summer Olympics was held in Rio de Janeiro.
Label: ENTAILMENT