メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.78783611231 43.2195954393029, 141.788347373868 43.220351500082, 141.78801017229 43.2202442255096, 141.787739068919 43.2201579671071, 141.787316495966 43.2200165192134, 141.787045383826 43.2199251927502, 141.786474938764 43.2197363070249, 141.785666582734 43.219460442451, 141.786020469956 43.2187546425302, 141.786600803441 43.2178137337331, 141.786988942956 43.2183988188187, 141.787417277292 43.2190297794678, 141.78783611231 43.2195954393029)) ^^http://www.opengis.net/ont/geosparql#wktLiteral