rdfs:member
http://hosi.org/ts/When/BasicTypes/M17n
貞観
ts:dbpedia
http://ja.dbpedia.org/resource/貞観_(日本)
ts:label
貞観
ts:reference
https://ja.wikipedia.org/wiki/%E8%B2%9E%E8%A6%B3_%28%E6%97%A5%E6%9C%AC%29