メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.00154870073 34.9028901349797, 137.001389925073 34.9026108837956, 137.001970004866 34.9025409603478, 137.002139565343 34.9024991437312, 137.002279096898 34.9024479903439, 137.002600549232 34.9023069343923, 137.002779421082 34.9025040205679, 137.002365779946 34.9026778430705, 137.002203848684 34.9027248817512, 137.00154870073 34.9028901349797)) ^^http://www.opengis.net/ont/geosparql#wktLiteral