<https://gillescarnoy.be/2012/06/11/comment-determiner-la-valeur-dun-usufruit-sur-un-immeuble-neuf-iii/#person>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://gillescarnoy.be/2012/06/11/comment-determiner-la-valeur-dun-usufruit-sur-un-immeuble-neuf-iii/>