メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.34593279638 43.0342187548778, 141.345842122029 43.0348639516963, 141.344373417172 43.0347811636469, 141.344387059545 43.0346797628592, 141.344411988133 43.0344944790606, 141.344463184102 43.0341139475031, 141.344540528947 43.0334764529672, 141.344564726635 43.0333368975858, 141.346024155512 43.0334287536082, 141.345988186371 43.0337043748242, 141.34593279638 43.0342187548778)) ^^http://www.opengis.net/ont/geosparql#wktLiteral