メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.306333718577 43.0947807934372, 141.305812069576 43.0950914932937, 141.30523740817 43.09543551106, 141.305079607199 43.0952939728199, 141.304938866225 43.0951663609319, 141.304669403643 43.0949222057492, 141.304603340742 43.0948623024106, 141.304477745573 43.0947483882844, 141.305051563989 43.0944028901518, 141.305571482589 43.0940985088179, 141.306333718577 43.0947807934372)) ^^http://www.opengis.net/ont/geosparql#wktLiteral