rdfs:member
http://hosi.org/ts/When/BasicTypes/M17n
承平
ts:dbpedia
http://ja.dbpedia.org/resource/承平_(日本)
ts:label
承平
ts:reference
https://ja.wikipedia.org/wiki/%E6%89%BF%E5%B9%B3_%28%E6%97%A5%E6%9C%AC%29