メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.336056580067 43.0664238678627, 141.33601381768 43.0665838768422, 141.335922085865 43.0669988601271, 141.335902396331 43.0670844346875, 141.335873290263 43.0671452473331, 141.334333661586 43.0669356505302, 141.334475658358 43.0663473585785, 141.334609198666 43.0658115342885, 141.336165361826 43.066016897586, 141.336104824637 43.0662434371878, 141.336056580067 43.0664238678627)) ^^http://www.opengis.net/ont/geosparql#wktLiteral