メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.345114655661 44.4857367426019, 142.343972388759 44.4854472229893, 142.344204734037 44.4849895795381, 142.344228500233 44.484942767129, 142.344268867707 44.4848545967941, 142.344916451795 44.485018100842, 142.34499226394 44.4848819848518, 142.345527838876 44.4850012458052, 142.345114655661 44.4857367426019)) ^^http://www.opengis.net/ont/geosparql#wktLiteral