メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.318817191731 43.0732831953565, 141.319082086819 43.0739219004714, 141.319124015143 43.0740230241873, 141.31912957587 43.0748600565406, 141.319136876761 43.0753475680634, 141.319059509422 43.0753757731765, 141.318766754868 43.0754553231492, 141.318597143066 43.075499445287, 141.318555703648 43.0754991078574, 141.318482209547 43.0754615871326, 141.317663971158 43.0747271544365, 141.31674713486 43.0739040718196, 141.317367928647 43.0732709672408, 141.317804358236 43.0728256842983, 141.318323767582 43.0722914752516, 141.318801357042 43.073245580666, 141.318817191731 43.0732831953565)) ^^http://www.opengis.net/ont/geosparql#wktLiteral