メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.972136669536 34.8597154499421, 136.973092078162 34.8608239619859, 136.971744012222 34.8616111671616, 136.971411249659 34.8612053709456, 136.97096307167 34.860658821127, 136.97015452966 34.8596524047306, 136.971439024517 34.8589059681216, 136.972136669536 34.8597154499421)) ^^http://www.opengis.net/ont/geosparql#wktLiteral