It is important for each person to fulfill their role.

Polygyny is a social system where one man marries multiple women.

Changes in the social system inevitably occur with time.

Watching a movie alone is enjoyable.

I went to see a movie by myself.

That man is my father.

This system is necessary to maintain social fairness.

Polygyny refers to a social system in which one man marries multiple women.

He understands his responsibilities as a working adult.

This problem has multiple answers.