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.

If the balance of the triple burner is disrupted, you may feel unwell.

He made a model of a triangular pyramid.

The three states of matter are solid, liquid, and gas.

My younger brother is currently in his third year of high school, preparing for university entrance exams.

Mitsuo is my best friend.

Sanzo is my best friend.