<https://vida-cp.com/works/%e3%83%95%e3%82%99%e3%83%a9%e3%83%b3%e3%83%88%e3%82%99%e3%83%92%e3%82%9a%e3%83%83%e3%83%88/attachment/16_1_1/#itempage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://vida-cp.com/works/%E3%83%95%E3%82%99%E3%83%A9%E3%83%B3%E3%83%88%E3%82%99%E3%83%92%E3%82%9A%E3%83%83%E3%83%88/attachment/16_1_1/>