<https://secure.gravatar.com/avatar/9f9b81c34df26a31ccd496ea00026fd0?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://dentalcarekorea.com/%EC%9E%84%ED%94%8C%EB%9E%80%ED%8A%B8-%EB%BC%88-%EC%9D%B4%EC%8B%9D-%EB%B9%84%EC%9A%A9/>