メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.063021193394 42.3798058256515, 141.063036073721 42.3798367870181, 141.063170353118 42.3805702544685, 141.063211385172 42.3810160596467, 141.063204089807 42.3814034053441, 141.063202081823 42.381510017402, 141.063246383945 42.3818376876089, 141.063317665904 42.3823649753782, 141.062934714774 42.3831524563156, 141.05991013974 42.3824399625885, 141.060090655537 42.3819895613845, 141.059384162966 42.3806370851545, 141.060098557937 42.3802700182368, 141.060761137807 42.3799485524714, 141.06264800624 42.3790335899458, 141.063021193394 42.3798058256515)) ^^http://www.opengis.net/ont/geosparql#wktLiteral