<https://secure.gravatar.com/avatar/377aa5ea1f8466f796fa48e2fa513af1?s=96&d=mm&r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blog.hkmovie6.com/tag/%E5%9C%A8%E5%92%96%E5%95%A1%E5%86%B7%E6%8E%89%E4%B9%8B%E5%89%8D/>