He was watching a live broadcast of soccer.

His service record is very excellent.

He returned to the scene to collect forensic evidence.

He observed the stars using a sextant for navigation.

She attached a new strap to her bag.

All his stories are thought to be lies.

He is an expert in computational linguistics and is involved in the development of artificial intelligence.

He is an expert in comparative linguistics.

Computational linguistics is the study of analyzing human language with computers.

He is trying to mend his relationship with his ex-wife.