The population of Japan is decreasing.

Demography is a branch of social science that studies the structure, distribution, and changes in human population.

Touya will participate in the track and field competition.

Watching a movie alone is enjoyable.

I went to see a movie by myself.

Kamakura Udaijin is the courtesy name of Minamoto no Sanetomo.

My younger brother goes to and leaves school by bicycle every day.

This syntactic sugar is used to make the code easier to read.

He was singing to himself alone in the room.

The sound effects of this movie are amazing.