He leaned against the wall because he was tired.

He leaned against the wall to rest his fatigue.

My luggage is very heavy.

The ship sank into the sea.

He headed to the library, holding a book under his arm.

He came into the classroom holding a book under his arm.

The success of this project is due to the persistence of effort.

This project requires persistence.

Kenji is my best friend.

He rang the hand bell in a Buddhist ceremony.