<https://www.hakodate-factory.com/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.hakodate-factory.com/topics/%E4%BB%8A%E5%B9%B4%E3%82%82%E3%81%8A%E5%BE%85%E3%81%A1%E3%81%97%E3%81%A6%E3%81%8A%E3%82%8A%E3%81%BE%E3%81%99%CF%B5-%CE%B8-%CF%B6/>