There are many World Heritage Sites in Kyoto.

He was reincarnated in another world.

He is interested in the history of the Old World.

This world line connects time and space.

A nuclear submarine can travel underwater for a long time.

Nuclear power plants are an important source of energy supply.

The International Atomic Energy Agency is an international organization that promotes the peaceful use of nuclear energy.

She is conducting research on the world's oldest profession.

Old World monkeys primarily inhabit Africa and Asia.

The World Trade Organization is an important organization that sets the rules for international trade.