メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.05765536588 34.8617478030749, 137.05733537914 34.8619064732834, 137.057123127778 34.8616235810415, 137.056911049924 34.8617317792587, 137.056034636496 34.860555960154, 137.056270943948 34.8604335590733, 137.056574181175 34.860280794054, 137.057247584474 34.8599539811878, 137.05829534591 34.8614231359731, 137.05765536588 34.8617478030749)) ^^http://www.opengis.net/ont/geosparql#wktLiteral