メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.122510688395 43.8253366524427, 144.12248532279 43.8252896379516, 144.124123636418 43.8247978994697, 144.12514625041 43.8250354006156, 144.125059907318 43.8252495022413, 144.124736743181 43.8262134845871, 144.12440063226 43.8266589096522, 144.123990171432 43.8271557444018, 144.123645785766 43.8275976971135, 144.123339604294 43.8279445997436, 144.122911409458 43.8283035932623, 144.122792520737 43.8284030416968, 144.122651974181 43.8286049670396, 144.122465539052 43.828849116583, 144.122094632071 43.8287667897511, 144.121194809432 43.8286681691138, 144.12101366723 43.8283173948184, 144.119773256763 43.8262395319945, 144.120342592082 43.8260517689554, 144.122510688395 43.8253366524427)) ^^http://www.opengis.net/ont/geosparql#wktLiteral