<http://vectorworks-bim.com/2017/04/22/%e6%9c%a8%e9%80%a0%e5%bb%ba%e5%85%b7%e8%a9%b3%e7%b4%b0%e3%83%84%e3%83%bc%e3%83%ab/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://vectorworks-bim.com/2017/04/22/%E6%9C%A8%E9%80%A0%E5%BB%BA%E5%85%B7%E8%A9%B3%E7%B4%B0%E3%83%84%E3%83%BC%E3%83%AB/>