メタデータ名 C2081
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.7062500 39.1000000, 141.7125000 39.1000000, 141.7125000 39.1041667, 141.7062500 39.1041667, 141.7062500 39.1000000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral