メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.212494836336 38.4242169063583, 141.211815291007 38.4257074744623, 141.211372300952 38.4267017624615, 141.208828789157 38.4260017523888, 141.208835016915 38.4259866697503, 141.209113115615 38.4253760998956, 141.209293775681 38.4249899493537, 141.209960819316 38.4235208321963, 141.21048293709 38.4223608890196, 141.210730635757 38.4218367051547, 141.211713063174 38.4227568389757, 141.212754223013 38.4236711419018, 141.212494836336 38.4242169063583)) ^^http://www.opengis.net/ont/geosparql#wktLiteral