Last night, I went to see a movie with my friends.

Please watch yourself when crossing the road.

A sea otter is a very cute animal that lives in the sea.

The otter is a cute animal that lives in the sea.

Mirai is my best friend.

An imaginary number is a concept of a number different from a real number, which is a number whose square root is a negative number.

My fountain pen needs new ink.

What is this gas?

Noble gases are known for not participating in chemical reactions.

I love comedy.