メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.988761740907 34.8715353461584, 136.988525452472 34.8715549288747, 136.987514013691 34.871622382943, 136.986649993308 34.8714759414233, 136.98667251733 34.8713840643927, 136.988039924395 34.8707089846374, 136.98826453367 34.870630577132, 136.988863136242 34.8704207348332, 136.989307262139 34.8713654275289, 136.988761740907 34.8715353461584)) ^^http://www.opengis.net/ont/geosparql#wktLiteral