メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.669659544006 33.2544665998798, 131.669495233434 33.2554409151141, 131.669303771792 33.2565387091953, 131.668072935737 33.2563820569509, 131.667800527947 33.2552330821093, 131.667551299405 33.2542147838998, 131.667426022318 33.253552337424, 131.667236236647 33.2530228315452, 131.667816284414 33.2531304403268, 131.668910372402 33.2532767702995, 131.669873099133 33.2533975527182, 131.669659544006 33.2544665998798)) ^^http://www.opengis.net/ont/geosparql#wktLiteral