<https://www.hira2.jp/#/schema/logo/image/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/ImageObject>
<https://www.hira2.jp/tag/%E3%83%91%E3%82%A4%E3%82%AF%E3%82%A4%E3%83%BC%E3%83%B3>