 Complete the following phrase:  The four home nations also field national sevens teams. England, Scotland and Wales are all core teams that compete in all events of the annual World Rugby Sevens Series for men, and England have been a core team in the World Rugby Womens Sevens Series since the latter competitions creation in 2012. Ireland have not been as competitive in mens sevens, but the womens sevens team have had core status alongside England on two different occasionsfirst for the 201314 series, and most recently since the 201516 series. The United Kingdom currently hosts an event in each mens World Sevens Series in London; the UK had also hosted a second event in Scotland, but that event was removed from the schedule after the 201415 series. The 201415 womens series saw the debut of a London event, but that tournament did not return in any subsequent series. Rugby union returned to the Olympics in 2016 with sevens tournaments for both men and women; the Great Britain mens team won the silver medal, losing to Fiji in the final, and the womens team lost in the bronze medal match to Canada. In a contrast with football, the participation of Great Britain sevens teams at the Olympics was endorsed by World Rugby then known as the International Rugby Board in 2011. In the Rugby World Cup Sevens, the mens teams of England and Wales have both been victoriousEngland in the inaugural tournament in 1993 and Wales in 