メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.331177719214 43.0416218975966, 141.331095777073 43.0422554737762, 141.330544330235 43.0422179188897, 141.329991527254 43.0421942057601, 141.329404143894 43.0421489719564, 141.329484402801 43.0415137659633, 141.329545763774 43.0410521929057, 141.330341095156 43.0410981123408, 141.330605983316 43.041113392102, 141.331235860642 43.0411439811058, 141.331177719214 43.0416218975966)) ^^http://www.opengis.net/ont/geosparql#wktLiteral