メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.971705682852 43.5514370337416, 144.971087366246 43.5514213525225, 144.970762078528 43.5513903187185, 144.971253813829 43.5510041599527, 144.971623034444 43.5507142311993, 144.971803934748 43.5508410296388, 144.97262091642 43.5502065544267, 144.973028393819 43.5504352916372, 144.972092790959 43.5511364452301, 144.971724801634 43.5511961949412, 144.971705682852 43.5514370337416)) ^^http://www.opengis.net/ont/geosparql#wktLiteral