<https://forum.homeone.com.au/viewtopic.php?f=31&t=54159>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forum.homeone.com.au/viewtopic.php?f=31&t=54159&sid=0f4833b5b5e67e22551263dd25c8b819&start=10940>