<https://arx.appi.keio.ac.jp/2014/03/16/spring-has-come-with-hay-fever/#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://arx.appi.keio.ac.jp/2014/03/16/spring-has-come-with-hay-fever/>