rdfs:member
http://hosi.org/ts/When/BasicTypes/M17n
保定
ts:dbpedia
http://ja.dbpedia.org/resource/保定_(北周)
ts:label
保定
ts:reference
https://ja.wikipedia.org/wiki/%E4%BF%9D%E5%AE%9A_%28%E5%8C%97%E5%91%A8%29