He is very good at composing music.

The spectrum of white light is created when white light passes through a prism.

Prussia is a historical country in Europe.

Phổ is a word referring to the history of Prussia.

This is a common issue in today's society.

The light spectrum is an important part of modern physics.

This company has popularized its products nationwide.

This is a popular coffee shop in the city.

The government aims to ensure universal access to education for all citizens.

General knowledge of world history is very important.