メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.430021700855 43.0633797818885, 141.430105445606 43.0644887178414, 141.429733624159 43.0645061701232, 141.429287670807 43.0645154958364, 141.428464698504 43.064543636862, 141.428103265536 43.0645589788738, 141.427583101948 43.0645731101822, 141.427513600485 43.0634709568153, 141.427451067477 43.0624073938484, 141.427942091571 43.0623905925718, 141.428465230772 43.0623749340954, 141.428928580014 43.0623619388564, 141.429322097195 43.0623493552989, 141.429949478326 43.0623278253583, 141.430021700855 43.0633797818885)) ^^http://www.opengis.net/ont/geosparql#wktLiteral