_:ne8dde82b78fa45a89677bc2f0fe9dd3dxb12
<http://schema.org/text>
"Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen.<a href='https://trike-attac.com/qa/what-is-ranking-of-coal.html#qa-how-is-coal-formed'>figure out</a>"
<https://trike-attac.com/qa/what-is-ranking-of-coal.html>