メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.52816668881 44.0739737804246, 143.528045048602 44.0740140352566, 143.525981670813 44.0747221492184, 143.52585629085 44.0725684890214, 143.526874738884 44.0722102204266, 143.528131105207 44.0717906900435, 143.528225418813 44.0717589423364, 143.528541183669 44.0716526295325, 143.528592312776 44.0716355409667, 143.529756664282 44.0734461195558, 143.529717266319 44.0734600529863, 143.529696262782 44.0734674870464, 143.52816668881 44.0739737804246)) ^^http://www.opengis.net/ont/geosparql#wktLiteral