メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.952577609395 43.5483584464969, 144.952410507038 43.54824514367, 144.952035180286 43.5479939125893, 144.951789071324 43.5478260822184, 144.952537453868 43.5472274107543, 144.953341283704 43.5477516025998, 144.953013016275 43.548007699053, 144.952577609395 43.5483584464969)) ^^http://www.opengis.net/ont/geosparql#wktLiteral