メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.377225082711 43.0931846478904, 141.377877836941 43.0931777311344, 141.378828580189 43.0931763125339, 141.378867737093 43.0936557540723, 141.378904073638 43.0941040183018, 141.378936370205 43.0946344520653, 141.378635002881 43.0946298405549, 141.378168981889 43.0946099808582, 141.377363409074 43.0945915429133, 141.377142858465 43.0945861367191, 141.376862098637 43.094576614019, 141.375352102612 43.0944456862313, 141.375474275823 43.0938931474372, 141.375581805203 43.0934456266289, 141.375697198409 43.0929713704466, 141.376897150869 43.0931388981193, 141.377225082711 43.0931846478904)) ^^http://www.opengis.net/ont/geosparql#wktLiteral