Diamond is the hardest mineral on Earth.

This mountain is mainly composed of granodiorite.

Cerebrospinal fluid plays an important role in protecting the brain and spinal cord.

This chair is really comfortable to sit on.

A pen fell from his notebook.

He thinks of his garden as a paradise.

It was our dream to visit this beautiful paradise.

He said that listening to music is his greatest pleasure.

The company went bankrupt due to the economic crisis.

He is driving a tractor in the rice field.