<https://www.unrealengine.com/ja/events/twinmotion-community-challenge-4-one-archicad-model-any-environment>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.unrealengine.com/ja/events/twinmotion-community-challenge-4-one-archicad-model-any-environment>