He received the letter challenging him to a duel and began preparing for the duel.

His role is to fulfill his responsibilities as a leader.

Gender roles are an important element in defining individual behavior in society.

It is important to understand the importance of health.

She emphasized the importance of self-determination.

The definitive edition of this game has finally been released.

A decision tree is a part of machine learning and a model for classifying or regressing data.

Tomorrow is the playoff of soccer.

In Buddhism, the mouth is considered a tool for speaking the truth.

Three new students have joined our class.