<https://dic.pixiv.net/a/%E3%82%AC%E3%83%AB%28%E5%A5%B3%E7%A5%9E%E8%BB%A2%E7%94%9F%E3%82%B7%E3%83%AA%E3%83%BC%E3%82%BA%29>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://dic.pixiv.net/a/%E3%82%AC%E3%83%AB%28%E5%A5%B3%E7%A5%9E%E8%BB%A2%E7%94%9F%E3%82%B7%E3%83%AA%E3%83%BC%E3%82%BA%29>