メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.547265368341 34.0624043648804, 134.546344443762 34.0624327779257, 134.54624649295 34.06108128233, 134.547242975413 34.0610117289694, 134.547265368341 34.0624043648804)) ^^http://www.opengis.net/ont/geosparql#wktLiteral