メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.335633518468 43.1415398295161, 141.335978945349 43.1414966563094, 141.337878592426 43.1412590747141, 141.338194507243 43.1426275083583, 141.338501134771 43.1439562002242, 141.337796975495 43.1440442871017, 141.336599188514 43.1441941309826, 141.335087416772 43.1443832375595, 141.334762073146 43.1430716123364, 141.33465741495 43.1426253140875, 141.334552774295 43.1421842909694, 141.334436066065 43.1416895799818, 141.335633518468 43.1415398295161)) ^^http://www.opengis.net/ont/geosparql#wktLiteral