メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.337402077708 43.0968282653709, 141.337514432982 43.0968429463436, 141.338140815564 43.096934449603, 141.338043111818 43.0972969166101, 141.338042388811 43.0973003568203, 141.337970160307 43.0976276516952, 141.337862296765 43.09801500363, 141.337309426739 43.0979358306885, 141.336305411923 43.0977910901402, 141.336323993138 43.0977225279914, 141.336388668183 43.0974004482413, 141.336391465822 43.0973866164792, 141.336399605763 43.0973555255179, 141.336581213744 43.0967207161548, 141.3370883447 43.0967835628746, 141.337402077708 43.0968282653709)) ^^http://www.opengis.net/ont/geosparql#wktLiteral