メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.9187500 34.2625000, 134.9250000 34.2625000, 134.9250000 34.2666667, 134.9187500 34.2666667, 134.9187500 34.2625000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral