メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.335775136602 43.0322712742817, 141.335363429905 43.0327003755017, 141.335339160724 43.0327207175178, 141.334348037657 43.0322775170595, 141.334196614837 43.032222642674, 141.334305463151 43.0320911523081, 141.334583603916 43.03174756406, 141.334847431677 43.0314186288991, 141.335094512617 43.031126131898, 141.335295946008 43.031183091919, 141.336048594487 43.0314416622592, 141.336405121356 43.0315647744278, 141.336433925062 43.0315747097542, 141.336167234748 43.0318516510105, 141.335775136602 43.0322712742817)) ^^http://www.opengis.net/ont/geosparql#wktLiteral