The Pentagon is the headquarters of the U.S. Department of Defense.

Mr. Honbu is my best friend.

The headquarters of my company is in Tokyo.

We should do our best to defend our country.

He is doing his best for the defense of the country.

He said he wanted to go to America.

He is thinking of going to America.

He is from the United States of America.

Let's refrain from using air conditioning for energy saving.

He works at the Ministry of Health, Labour and Welfare.