He decided to broaden his artistic horizons by visiting art museums around the world.

I read his short biography and understood how excellent a person he is.

He is studying about past presidents.

When I looked into his history, some very interesting facts came to light.

My brother is good at playing the electric bass.

We calculate time using the solar calendar.

He is receiving treatment for scrofula.

He learned about the elekiter in history class.

We track the date using the Gregorian calendar.

There are regions that hold festivals based on the lunar calendar.