メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.156941903255 34.6737497573925, 135.156504404288 34.6741966965804, 135.156285619025 34.6744167861601, 135.155919811039 34.6741150091279, 135.155564982629 34.6738199179231, 135.155729724954 34.6736520308634, 135.156183414381 34.6731869544352, 135.156941903255 34.6737497573925)) ^^http://www.opengis.net/ont/geosparql#wktLiteral