The government is taking an active 'role in' improving public schools. [=the government is actively involved in improving public schools]
After her husband left her, she had to take on the dual 'role' of mother and father for her children.
It was a case of 'role reversal': the father stayed home with the children while the mother worked.
(..) When I was still a boy - before they cut my balls off with a hot knife - I traveled with a group of actors through the free cities. They taught me that each man has a role to play. The same is true at court. I am the master of whisperers. My role is to be sly, obsequious and without scruples. (..)2011 TvShow: Game of Thrones Title: Baelor Season: 1 Episode 9