メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.378449675797 43.0904034276719, 141.378462167114 43.0903955046438, 141.378647108625 43.0908192306895, 141.378653242249 43.0908332726987, 141.378721146582 43.0916666817421, 141.377324020518 43.0916808749875, 141.376898131947 43.0916207352844, 141.376051700452 43.0915094235376, 141.37616496402 43.0910157407704, 141.376274165028 43.0905646459665, 141.376380016759 43.0901059999039, 141.377060319648 43.0902040889286, 141.377226854609 43.0902280031576, 141.378449675797 43.0904034276719)) ^^http://www.opengis.net/ont/geosparql#wktLiteral