メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.326967582381 43.0641605065775, 141.32695984717 43.0641901232198, 141.326903232529 43.0644088119459, 141.326820646002 43.064728071433, 141.326309833342 43.0646665566703, 141.325272273692 43.0645126582838, 141.325420947793 43.0639516499055, 141.325567975742 43.0633786730755, 141.326191256144 43.0634678944731, 141.327123648118 43.0635915387439, 141.326967582381 43.0641605065775)) ^^http://www.opengis.net/ont/geosparql#wktLiteral