メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.358109988665 43.0900487267159, 141.357987990896 43.0905331792002, 141.357435369629 43.0904598783092, 141.356426178846 43.0903203469345, 141.35650594779 43.0900085725403, 141.356533306046 43.0898495632874, 141.356771708822 43.088883709715, 141.356783391475 43.0888853474757, 141.358334966396 43.0890872673565, 141.358149114479 43.0897994371161, 141.358109988665 43.0900487267159)) ^^http://www.opengis.net/ont/geosparql#wktLiteral