メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.168965701105 34.2297664902391, 135.169287407094 34.2305052694978, 135.168091116413 34.2304939558823, 135.168085215133 34.2297191319495, 135.168262173633 34.2297203268603, 135.168937481494 34.2297040357672, 135.168965701105 34.2297664902391)) ^^http://www.opengis.net/ont/geosparql#wktLiteral