メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.726105464581 35.177822132382, 136.726106647042 35.1780722711781, 136.725189957454 35.1780782960179, 136.72504576478 35.1776270067161, 136.725008983181 35.1776164506626, 136.724990065775 35.1775934242249, 136.725447292256 35.1774475604936, 136.726093559139 35.1773733675661, 136.726105464581 35.177822132382)) ^^http://www.opengis.net/ont/geosparql#wktLiteral