メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.405267718461 44.1772019188409, 142.405193884454 44.1771896593949, 142.404085684974 44.177005660204, 142.404102716055 44.1769512491091, 142.40433652475 44.1765660930957, 142.404466491826 44.176466507537, 142.405121206172 44.1768945344979, 142.405216019251 44.1769415722857, 142.405308392176 44.176962400269, 142.405267718461 44.1772019188409)) ^^http://www.opengis.net/ont/geosparql#wktLiteral