メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.886373687535 43.0186012719468, 142.885476938544 43.0193899216384, 142.885430111066 43.0193615568981, 142.885328211018 43.0192998804301, 142.885287074214 43.0192750003529, 142.885214628253 43.0192300396966, 142.884226306457 43.0186173123237, 142.884156852952 43.0185742329426, 142.883714633989 43.018301196137, 142.884647775041 43.0175183367967, 142.884907911779 43.0176822418361, 142.885051317005 43.0177725949496, 142.886026133893 43.0183865847444, 142.886254005302 43.0185301299989, 142.886373687535 43.0186012719468)) ^^http://www.opengis.net/ont/geosparql#wktLiteral