He was staring at the flame in the campfire.

This ancient artifact is very valuable.

It is very interesting to learn about ancient history.

You need to use your head to solve this problem.

We are considering introducing a new voting system.

Learning a new input method is difficult.

We have developed a new methodology to solve this problem.

He is using that coat from winter to spring.

A passion that burns like fire drives me forward.

When the volcano erupted, the entire town turned into a sea of fire.