<https://www.kotoba1.com/post/\u7ACB\u6559\u4E2D\u5B66\u6821\u3067\u6559\u3048\u3066\u3044\u305F\u3060\u3044\u305F\u5148\u751F>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.kotoba1.com/post/%E7%AB%8B%E6%95%99%E4%B8%AD%E5%AD%A6%E6%A0%A1%E3%81%A7%E6%95%99%E3%81%88%E3%81%A6%E3%81%84%E3%81%9F%E3%81%A0%E3%81%84%E3%81%9F%E5%85%88%E7%94%9F>