メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.920144293008 35.2077434289362, 136.920100091302 35.2081186326528, 136.92005709633 35.2085281358783, 136.918773427167 35.2084169709159, 136.91881402256 35.2080157029601, 136.918856723687 35.2076421865439, 136.918899688219 35.2072664161495, 136.920187965449 35.2073728016219, 136.920144293008 35.2077434289362)) ^^http://www.opengis.net/ont/geosparql#wktLiteral