Question: Marina Hmelevskaya, is a Uzbekistani long distance runner who specialises in the marathon, she competed in the women's marathon event at the 2016 Summer Olympics, officially known as the Games of the XXXI Olympiad and commonly known as Rio 2016, was a major international multi-sport event celebrated in Rio de Janeiro, Brazil, from what date time span?
Sentence (from "Sofia Riga"): She competed in the women's marathon event at the 2016 Summer Olympics.
Relevant evidence: No