 Complete the following phrase:  Duffy is the 2016 and 2017 ITU World Triathlon Series World Champion, the 2015 and 2016 ITU Cross Triathlon World Champion, and a five-time winner 2014-2017, 2019 of the XTERRA World Championships. She competed for Bermuda at the 2008 Summer Olympics in Beijing, the 2012 Summer Olympics in London, the 2016 Summer Olympics in Rio de Janeiro, and the 