メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.335096621301 43.0560603278339, 141.335452834205 43.0561043908811, 141.335385778147 43.0563764511021, 141.335301159413 43.0567137076222, 141.335239883173 43.0569581745766, 141.335176948471 43.0572432090829, 141.334160613668 43.0571074257499, 141.333605877537 43.057030401755, 141.333736813747 43.0564946266122, 141.333892507255 43.0558999017633, 141.334691636103 43.0560068720576, 141.335096621301 43.0560603278339)) ^^http://www.opengis.net/ont/geosparql#wktLiteral