メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.525090447304 43.849616781428, 141.524803735843 43.8501511592767, 141.524724969855 43.8503003023231, 141.522267543886 43.849703680583, 141.521849950312 43.8495957700399, 141.521014515203 43.8493967487741, 141.520824803166 43.8493677619624, 141.52095649805 43.84916175267, 141.521184228538 43.8486575281975, 141.525090447304 43.849616781428)) ^^http://www.opengis.net/ont/geosparql#wktLiteral