rdfs:member
http://hosi.org/ts/When/BasicTypes/M17n
rdfs:label
石炭紀
Carboniferous
ts:dbpedia
http://ja.dbpedia.org/resource/石炭紀
http://dbpedia.org/resource/Carboniferous
ts:label
Carboniferous
ts:reference
https://ja.wikipedia.org/wiki/%E7%9F%B3%E7%82%AD%E7%B4%80
https://en.wikipedia.org/wiki/Carboniferous