He made the decision to abdicate the throne.

He decided to abdicate the throne.

He left the soccer team last year.

He decided to leave the music group.

He played an active role as a captain in a historical war.

This building is made of fire-resistant materials.

Mr. Taira is my best friend.

He found out that there was a foreign object inside his body.

I had the opportunity to talk with a famous writer.

The degeneration of this species is due to environmental changes.