メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.547294403205 34.0637589800132, 134.546424396272 34.0637861868201, 134.545688582214 34.0637971713017, 134.545641797029 34.0628964388974, 134.545994510287 34.0628875906216, 134.546002574055 34.062951546611, 134.54636062179 34.0629360308541, 134.546349992645 34.0627944081932, 134.546344443762 34.0624327779257, 134.547265368341 34.0624043648804, 134.547275365456 34.0628726628297, 134.547294403205 34.0637589800132)) ^^http://www.opengis.net/ont/geosparql#wktLiteral