メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.871126243129 35.4603108087364, 136.871228158809 35.4611118182721, 136.870212973629 35.4611702380115, 136.869419302925 35.461227858865, 136.8690285441 35.4613339375176, 136.868844426953 35.4614169695222, 136.868652057784 35.4615142774341, 136.868244252533 35.4610451573929, 136.868521250808 35.4608486565447, 136.868721024599 35.4606030891979, 136.868818943685 35.4603476213949, 136.868832844457 35.460029444995, 136.86879444598 35.4598145204789, 136.869543061979 35.4597746794582, 136.871039444188 35.4596621637273, 136.871126243129 35.4603108087364)) ^^http://www.opengis.net/ont/geosparql#wktLiteral