メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.911024527291 43.5135075544898, 141.911580133673 43.5134130291457, 141.911764640555 43.5140367693591, 141.911930422952 43.5145972317116, 141.911930272877 43.5146239547345, 141.9115352904 43.5146561922132, 141.911143388985 43.5146817554829, 141.910825148241 43.5146719159257, 141.910549988687 43.5146220825094, 141.910213841405 43.514531981538, 141.90987789747 43.5144062592558, 141.91016193027 43.5139664044457, 141.910554064006 43.5133591764129, 141.911024527291 43.5135075544898)) ^^http://www.opengis.net/ont/geosparql#wktLiteral