メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.431952779446 43.7944346842541, 142.433356815362 43.7953253926, 142.432752668239 43.7958291170344, 142.432011349886 43.7964471832436, 142.431551529141 43.796158837175, 142.431105499864 43.7958791532236, 142.430643013116 43.7955891372206, 142.430077634958 43.7952345853114, 142.43147528428 43.7941317556182, 142.431952779446 43.7944346842541)) ^^http://www.opengis.net/ont/geosparql#wktLiteral