メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.565388235399 42.9707170570117, 141.564921839595 42.9705940015768, 141.564364222481 42.9706780888636, 141.563990199688 42.9705811827195, 141.563182575261 42.9708451522441, 141.563346553387 42.9704949688144, 141.563546645724 42.9700447086336, 141.563643898182 42.9698382345693, 141.563650865695 42.9698231548669, 141.56383765755 42.9694189511564, 141.564084183298 42.9688918160324, 141.564184069422 42.9686807172476, 141.564337612706 42.9683117638097, 141.564420118095 42.9681348122169, 141.564727097041 42.9674879837999, 141.565795125038 42.9678458826438, 141.56664826293 42.9681469982132, 141.56617564172 42.9691204454334, 141.565700657306 42.9700549914986, 141.565388235399 42.9707170570117)) ^^http://www.opengis.net/ont/geosparql#wktLiteral