 Complete the following phrase:  With Team Ulsrud during the 20072010 seasons, Petersson won six World Curling Tour events, three European Curling Championship medals silver in 2007 and 2008; bronze in 2009, three World Curling Championship medals bronze in 2008 and 2009; silver in 2010, and silver at the 2010 Vancouver Winter Olympics. His shooting accuracy proved to be consistently high in the 8090 percentiles during the 200910 season, which significantly contributed to his teams top round-robin standings at the 