 Complete the following phrase:  The Australia womens national rugby sevens team were champions of the inaugural Womens Sevens World Cup in 2009. The team plays in the World Rugby Womens Sevens Series as one of the core teams on the world tour, of which they were crowned Champions in 201516. The team also played in the preceding competition to the current world series, the IRB Womens Sevens Challenge Cup. In 2016, they won the inaugural gold medal at the 