メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.266868693716 44.0168416196291, 144.266835064068 44.0170279246816, 144.266830887021 44.0170713348702, 144.266713685573 44.0174882722594, 144.266674215329 44.0176288347948, 144.266659957056 44.0176853031365, 144.26659613394 44.0178433146173, 144.266349370194 44.0178476769371, 144.266346822037 44.0179104385036, 144.265148298597 44.0178238807631, 144.265180476192 44.0176405703317, 144.265244535604 44.0173687620827, 144.265330878254 44.016748317752, 144.266868693716 44.0168416196291)) ^^http://www.opengis.net/ont/geosparql#wktLiteral