<https://watashinokyoukasyo.com/stars-custom-objects-aviutl/%e3%83%87%e3%83%a2-1-2/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://watashinokyoukasyo.com/stars-custom-objects-aviutl/%E3%83%87%E3%83%A2-1-2/>