Kunimitsu is my best friend.

He was deeply involved in the politics of the republic.

His new game is very popular in the netizen community.

The culture of Russia (obsolete term) is very interesting.

His country was under the influence of the suzerain for a long time.

This shape is an antiprism.

This rock is gabbro.

He was arrested for a minor offense.

This wall is made of a special material that causes diffuse reflection.

This material has the property of diffusely reflecting light.