メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.759600554786 35.4007763722556, 136.759266455272 35.4008722940651, 136.758909056053 35.4000975004872, 136.758876262125 35.4000090107444, 136.75854610481 35.3994101541478, 136.758368737848 35.3989813173775, 136.758756071702 35.3988844509611, 136.758693025905 35.3986808587307, 136.758955488812 35.3986164587458, 136.759027884452 35.3988419135309, 136.759600554786 35.4007763722556)) ^^http://www.opengis.net/ont/geosparql#wktLiteral