Japan began the colonisation of Hokkaido in the 19th century.

Japan once colonised Hokkaido.

The atmosphere of this planet is harmful to humans.

I threw an octopus pot into the sea yesterday.

A tachyon is a particle that is theoretically predicted to move faster than light.

She self-proclaims to be a shotacon.

Your house is very nice, isn't it?

It is necessary to finish the chess game within the time limit using a game clock.

He is good at calculating polynomials.

I made a calendar using the new calender.