 Complete the following phrase:  Martin Rios born 24 May 1981 is a Spanish-Swiss curler. He competed in the 2018 Winter Olympics in the mixed doubles tournament with partner Jenny Perret, winning a silver medal. He is two-time 2012, 2017 World Mixed Doubles Champion and 2011 European Mixed Champion. At the 2012 World Mixed Doubles Curling Championship he was partnered with Nadine Lehmann and at the 