Japan Search model RDF

Resources described in this source:

• https://jpsearch.go.jp/entity/chname/歌川国貞
• https://jpsearch.go.jp/entity/place/チェコ
• https://jpsearch.go.jp/entity/time/1820-1828
• https://jpsearch.go.jp/term/keyword/Oppenheimer_collection
• https://jpsearch.go.jp/term/keyword/旧オッペンハイマー蔵