メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.264991405253 44.0136151488845, 144.265792919064 44.0136504976682, 144.265666703951 44.0145142617181, 144.264860502353 44.0144789947904, 144.263943429876 44.0144093702666, 144.263913586604 44.0144085983906, 144.263927750363 44.0136762586665, 144.263930086465 44.0135611476742, 144.264991405253 44.0136151488845)) ^^http://www.opengis.net/ont/geosparql#wktLiteral