<https://www.open-contracting.org/2020/02/07/how-to-build-internal-alignment-with-the-challenge-wheel/#primaryimage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.open-contracting.org/2020/02/07/how-to-build-internal-alignment-with-the-challenge-wheel/>