The emotional atmosphere of this room is very calming.

I have been to Heidelberg in Germany.

Minkowski spacetime is a fundamental concept in the theory of special relativity.

An infraorder is one of the classification groups of fish.

The Levites are one of the twelve tribes of ancient Israel.

This area used to be plagued by attacks from roving bandits.

My house is in this district.

Kumiko is my best friend.

He keeps making the same mistake over and over again.

He is also using psychological warfare in business.