メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.558723495683 34.0793822677325, 134.558058576136 34.0796658603026, 134.557591388241 34.0788549795398, 134.557921046603 34.0787227528362, 134.557934857703 34.0787442562769, 134.558267166182 34.0785938362098, 134.558723495683 34.0793822677325)) ^^http://www.opengis.net/ont/geosparql#wktLiteral