メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.384941168939 43.0847978678081, 141.384250351872 43.0850888617621, 141.382886276697 43.0856947565531, 141.382623040516 43.0853448449901, 141.382349986837 43.0849768551307, 141.382244024448 43.0847283538453, 141.382145301632 43.0845310356884, 141.382668703891 43.0842945469801, 141.383401177037 43.0839767900497, 141.384087321566 43.0836704982405, 141.384453709787 43.0841619892367, 141.384702697284 43.0844879507318, 141.384941168939 43.0847978678081)) ^^http://www.opengis.net/ont/geosparql#wktLiteral