<https://secure.gravatar.com/avatar/6297ca4e13f0a197385c42331e0281c9?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://newtoki.site/%EC%BB%B4%ED%93%A8%ED%84%B0%EB%9E%80/>