メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.599023184786 42.779242393961, 141.599495363958 42.779219477259, 141.600037521989 42.7791879543449, 141.600123516417 42.7799116070146, 141.600127810308 42.7799759155861, 141.600279095599 42.7813723227191, 141.600439052456 42.7828031020194, 141.600455034655 42.7829091140497, 141.599899323303 42.7829325438846, 141.597759226654 42.7830653921829, 141.597735773248 42.7830666647053, 141.597579989988 42.7815626201874, 141.59752203731 42.7810124265068, 141.597377124568 42.7793515994664, 141.597720359546 42.7793245795958, 141.599023184786 42.779242393961)) ^^http://www.opengis.net/ont/geosparql#wktLiteral