メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.052551425463 39.3904767206662, 141.051755772772 39.3907767488475, 141.05178679292 39.3904960380591, 141.051823423682 39.3902978652148, 141.051826165085 39.3894806024555, 141.053446366506 39.389648830724, 141.053468126789 39.3897973498829, 141.053556294698 39.3899019699121, 141.053637116 39.3899990038456, 141.053659657924 39.390051037639, 141.052627279173 39.3904475853497, 141.052551425463 39.3904767206662)) ^^http://www.opengis.net/ont/geosparql#wktLiteral