Fluorine naturally exists in the Earth's atmosphere.

She is planning a date with her current boyfriend.

He lost everything.

My boyfriend gave me a gift.

Everyone was surprised by the news.

This area used to be a concession territory.

The Letter to the Ephesians is a part of the New Testament.

The US-Soviet Cold War was a significant turning point in world history.

He likes to take a walk in the park at dusk.

He can speak Japanese fluently.