メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.0042227585 43.5678474530168, 145.004161222044 43.5678086789076, 145.004115987148 43.567779533206, 145.004039400084 43.5678390756331, 145.003271104083 43.5673760544395, 145.003371983072 43.5672936005603, 145.004236415647 43.5665867330401, 145.005013238491 43.5670925766517, 145.005091184237 43.567143400817, 145.004775673304 43.5673924499377, 145.0042227585 43.5678474530168)) ^^http://www.opengis.net/ont/geosparql#wktLiteral