メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.337521623489 43.1328054981913, 141.337331774894 43.1328317670711, 141.336909288739 43.1328811599129, 141.336066833549 43.1329796469461, 141.335341631126 43.1330643749089, 141.33527948193 43.1327692752192, 141.335067136284 43.131759989606, 141.334906328659 43.1311845465236, 141.334719016176 43.1303518426147, 141.335177878932 43.130295516155, 141.33568666869 43.1302329760793, 141.337437556657 43.1300241324942, 141.337662502454 43.13096972411, 141.337770866688 43.1314251863782, 141.337888995594 43.1319215869546, 141.33808284918 43.1327439262291, 141.337521623489 43.1328054981913)) ^^http://www.opengis.net/ont/geosparql#wktLiteral