He used a handkerchief to wipe his sweat.

He is involved in the development of androids.

She announced that she is pregnant.

He needed a fathom's depth to ask that question.

The ship has sunk.

He couldn't recognize the character.

He is interested in the study of constructed languages.

He was attacked personally.

Human trafficking is prohibited all over the world.

He is a renowned anthropologist, traveling around the world to study human cultures.