<https://forum.affinity.serif.com/index.php?/topic/214884-different-results-in-different-export-format/#comment-1270452>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forum.affinity.serif.com/index.php?/topic/214884-different-results-in-different-export-format/>