メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.647177762093 34.8145206526376, 134.646818485661 34.8146455356873, 134.645929284406 34.8149215160069, 134.64528737314 34.8136936134147, 134.645306604831 34.8136697592022, 134.645499269975 34.8137589906221, 134.645819359116 34.8139073365924, 134.646326284719 34.8141274604627, 134.647177762093 34.8145206526376)) ^^http://www.opengis.net/ont/geosparql#wktLiteral