I have been to Reykjavík.

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

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

Mr. Okuda is an insurance sales representative.

She brought up her child alone.

My younger brother is attending a middle education school.

Aine is my best friend.

Three countries formed an alliance.