メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.331709156578 43.0677460278675, 141.332455521966 43.0678574460891, 141.33237697624 43.068184056813, 141.332313397877 43.0684268858801, 141.332257855195 43.068639045211, 141.332222145846 43.0687756188737, 141.332216633318 43.068797868402, 141.332167014343 43.0689986821197, 141.331398598772 43.0688983379721, 141.330617277968 43.0687759413276, 141.330741366465 43.0683232464124, 141.330914373762 43.067639631214, 141.331709156578 43.0677460278675)) ^^http://www.opengis.net/ont/geosparql#wktLiteral