メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.607141835437 43.2954082700585, 144.607008803229 43.2955831654772, 144.606951650256 43.2956588163275, 144.60682749959 43.2954061027159, 144.606023553939 43.2950617065024, 144.604674270953 43.2944871202248, 144.604710517978 43.2944534625236, 144.604760241136 43.2943947723964, 144.604964830209 43.2941181240118, 144.604977082857 43.2941063389296, 144.604994702163 43.2940938797802, 144.605989563744 43.2928416584291, 144.607141835437 43.2954082700585)) ^^http://www.opengis.net/ont/geosparql#wktLiteral