Complex sentence: The Samoa national rugby sevens team, referred to as the Samoa Sevens or Manu Samoa 7s, competes in the annual World Rugby Sevens Series, and won the 2009--10 World Series.
Split into simpler sentences: The Samoa national rugby sevens team, referred to as the Samoa Sevens or Manu Samoa 7s, represents Samoa internationally in rugby sevens. The team competes in the annual World Rugby Sevens Series, and won the 2009--10 World Series.