<https://www.wedding-booklet.com/#listItem>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.wedding-booklet.com/blog/2015/01/09/672/%E8%91%9B%E8%A5%BF%E3%81%95%E3%81%BE%E8%A1%A8%E7%B4%99/>