メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.810697353939 34.054596731363, 131.810641658271 34.0546202362099, 131.809915206279 34.0533220360769, 131.809852663265 34.0532168990738, 131.810345909009 34.0530181528406, 131.810371507464 34.0530588008598, 131.810709922076 34.0529144022954, 131.810790050335 34.0530184630895, 131.811465837271 34.054272699782, 131.810697353939 34.054596731363)) ^^http://www.opengis.net/ont/geosparql#wktLiteral