He was deeply involved in the project.

He is deeply involved in the project.

The author's message is written on the opening page of this book.

I live in the Kanto region.

I think this game is an impossible game.

Darnels are a type of weed that can hinder the growth of crops.

I think that's impossible.

Lyra is one of the summer constellations.

Sagitta is one of the very small constellations in astronomy.

Pictor is one of the constellations in the southern hemisphere.