I think that among these five elements, the earth element is the most important.

Stalin was the leader of the Soviet Union.

Lincoln is a city and borough in Lincolnshire.

Aniline is a compound often used in the field of chemistry.

I visited the historical town, Jukirin.

The status of the forest in this area is very good.

Phosphophyllite is a beautiful green mineral that is also used as jewelry.

Improving the flow of lymph increases the body's immunity.

Gonococcus is a bacterium that causes one type of sexually transmitted disease.

Tridymite, a type of high-temperature quartz, is often found in volcanic rocks.