<https://forums.modelflying.co.uk/index.php?/topic/53431-mowing-the-strip/#comment-970221>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forums.modelflying.co.uk/index.php?/topic/53431-mowing-the-strip/&tab=comments#comment-970196>