Complex sentence: Since 1999, same-sex couples can adopt their partner's biological children (stepchild adoption) and, in March 2009, the Danish Parliament decided to work on legislation allowing same-sex couples to jointly apply for adoption.
Split into simpler sentences: Since 1999, same-sex couples can adopt their partner's biological children (stepchild adoption). In March 2009, the Danish Parliament decided to work on legislation allowing same-sex couples to jointly apply for adoption.