メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.360399333444 43.094117300634, 141.360206036049 43.094906554063, 141.359618995514 43.0948282150499, 141.359187958685 43.0947723966529, 141.358600989546 43.0946959518812, 141.358789239722 43.0938655853981, 141.358864859202 43.0935086975842, 141.359421933084 43.0935813230745, 141.359444628384 43.0935845946037, 141.360495255569 43.0937362363244, 141.360399333444 43.094117300634)) ^^http://www.opengis.net/ont/geosparql#wktLiteral