This lake is inhabited by a wide variety of aquatic organisms.

He was unable to control his lust.

Database transactions need to ensure their atomicity.

He is a master of Western chess.

He made a demand to the company for a raise in salary.

Astronomers have reported the discovery of a new supernova.

This policy is necessary to stimulate the economy.

His speech sound is very attractive.

Please imagine the day when extraterrestrials come to Earth.

Every Sunday, we look forward to hearing the beautiful singing of the choir at the church.