メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.656591779505 32.5765023587808, 131.658081372912 32.5773136603668, 131.658944982599 32.5777620861721, 131.659069311851 32.5778266803618, 131.658952913913 32.5779541793549, 131.657087161448 32.5783192443621, 131.656613802475 32.5784259445973, 131.655199289508 32.5786929552257, 131.65396129985 32.5789373707439, 131.653761273098 32.5781742736017, 131.653484900083 32.5771155515092, 131.653213895647 32.5761191904422, 131.654423076273 32.5758767969005, 131.654256073316 32.5752601493495, 131.655141622462 32.5757444890173, 131.656591779505 32.5765023587808)) ^^http://www.opengis.net/ont/geosparql#wktLiteral