メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.924219215672 43.4984380031927, 141.924646908693 43.4983717799745, 141.925247789503 43.4982787274883, 141.926285302013 43.4981180585819, 141.926938871217 43.4980168473443, 141.927141536975 43.4986942150547, 141.927113112955 43.4986984600087, 141.926488631634 43.4987918783214, 141.925814454368 43.4988927115735, 141.925437650819 43.4989490970819, 141.925111099268 43.498997925149, 141.92485991227 43.4990355014463, 141.924443514883 43.4990977838604, 141.923719851563 43.4992060234812, 141.92360333487 43.4988692109385, 141.923595297077 43.4988459802766, 141.923505691017 43.4985484864824, 141.924219215672 43.4984380031927)) ^^http://www.opengis.net/ont/geosparql#wktLiteral