メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.276378594035 42.9562429350013, 141.276352102592 42.9563076941117, 141.276323619259 42.9565165792518, 141.276322973356 42.9565213160758, 141.276041310145 42.9578107229257, 141.275112765655 42.9577094859564, 141.274825919343 42.9576894573692, 141.274605081279 42.957661201457, 141.274556054759 42.9576552262963, 141.27444987783 42.9576422947025, 141.274085569105 42.9576040917493, 141.274013928556 42.9575991206642, 141.273582488644 42.9575614685079, 141.27372220897 42.9567740655644, 141.273851624001 42.9560446644236, 141.273989920881 42.9552922714714, 141.276349320144 42.9555254707854, 141.276400057601 42.9559992859415, 141.276418896548 42.9561524843037, 141.276378594035 42.9562429350013)) ^^http://www.opengis.net/ont/geosparql#wktLiteral