メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.987495845624 34.8832037244638, 136.987668309404 34.8837110019825, 136.985906839156 34.8841191219365, 136.98571860224 34.8836138601068, 136.985542165153 34.8831270692717, 136.9853670797 34.8826240811479, 136.987165400134 34.8821901762785, 136.987191597085 34.8822335294632, 136.987495845624 34.8832037244638)) ^^http://www.opengis.net/ont/geosparql#wktLiteral