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.

He told the story using the past tense.

A dwarf star is a star that is smaller and less bright than the sun.