He started a fire using coal.

His answer was short.

I am the type of person who consults with friends.

Carbon is one of the basic elements of life.

This ring is made of titanium.

Tungsten is a very hard metal that is resistant to high temperatures.

Lanthanum is one of the chemical elements, and its symbol is La.

He sent me a brief note.

In this experiment, we will use the International System of Units.

He is a very excellent detective.