He is an expert in dialectology, studying dialects from all over Japan.

If you subtract the subtrahend from the minuend, you get the difference.

The limit of this plan is the lack of funds.

He is passionate about studying paleoglyphs.

The Neoproterozoic era was a very important period in the history of the Earth.

Estrogen is a type of female hormone.

He composed a fantasia for the piano.

We took a walk in the primeval forest over the weekend.

The last act of today's kabuki program is the 'kiri-kyogen'.

He seems to be in a bad mood.