<https://photoblog.hk/26486/%e3%80%94%e9%a6%99%e6%b8%af%e5%91%b3%e9%81%93%e3%80%95%e9%97%9c%e9%8c%a6%e6%98%8c%e7%9a%84%e6%b2%b9%e5%b0%96%e6%97%ba/#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://photoblog.hk/26486/%E3%80%94%E9%A6%99%E6%B8%AF%E5%91%B3%E9%81%93%E3%80%95%E9%97%9C%E9%8C%A6%E6%98%8C%E7%9A%84%E6%B2%B9%E5%B0%96%E6%97%BA/>