rdfs:member
http://hosi.org/ts/When/BasicTypes/M17n
保安
ts:dbpedia
http://ja.dbpedia.org/resource/保安_(元号)
ts:label
保安
ts:reference
https://ja.wikipedia.org/wiki/%E4%BF%9D%E5%AE%89_%28%E5%85%83%E5%8F%B7%29