メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.918170325377 35.0770281767604, 136.916813031008 35.0771042889688, 136.916802904075 35.0769243978727, 136.916786188888 35.076742098115, 136.91832353068 35.0766416324674, 136.919573085257 35.0765531712159, 136.920952520566 35.0764591127859, 136.920991548715 35.0764564444094, 136.920918810665 35.0768740732092, 136.920952067738 35.0769039308774, 136.920895680607 35.0769106488964, 136.918169841807 35.0770248655912, 136.918170325377 35.0770281767604)) ^^http://www.opengis.net/ont/geosparql#wktLiteral