メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.374488293505 43.809062452827, 142.373997447226 43.8094061337912, 142.37354642255 43.8097337362991, 142.373128574184 43.8100468854034, 142.372720019484 43.8103205724858, 142.372012007811 43.8108414218088, 142.370621460727 43.8098373578346, 142.37153898191 43.8091908060279, 142.372085278526 43.8087779864869, 142.372473851481 43.8084957435852, 142.372611482335 43.8083957753405, 142.372882835437 43.8082021559562, 142.373113367791 43.8080376550589, 142.374013679959 43.8086941568549, 142.374488293505 43.809062452827)) ^^http://www.opengis.net/ont/geosparql#wktLiteral