メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.333315194014 42.9850894826165, 141.333634135878 42.9851125731347, 141.335138639629 42.9852192705057, 141.335010916811 42.9857649250204, 141.33480646995 42.986555211706, 141.334468195172 42.9865110811093, 141.333167125112 42.986417679254, 141.332713353287 42.9863970931736, 141.332705971221 42.9864297384083, 141.332298580293 42.9864015751679, 141.33233171885 42.9860602466006, 141.332340765528 42.9859671320117, 141.332477064498 42.9850519628956, 141.333065914899 42.9850714512789, 141.333315194014 42.9850894826165)) ^^http://www.opengis.net/ont/geosparql#wktLiteral