メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.997949649323 34.8989825021577, 136.999303427653 34.9005018154513, 136.998991158736 34.9007457709751, 136.998482627471 34.9011202395131, 136.998281956059 34.9009138893129, 136.998013869545 34.9006253259209, 136.997296426756 34.8998690585899, 136.996845463523 34.89935683906, 136.997042921148 34.8990711061803, 136.997374992099 34.8986385773367, 136.997480098512 34.8984744848358, 136.997949649323 34.8989825021577)) ^^http://www.opengis.net/ont/geosparql#wktLiteral