メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.698727037861 35.4298955825744, 136.698726032939 35.4299130077001, 136.698701636912 35.4303377220655, 136.69870109983 35.4304305689361, 136.698701006546 35.4304466950948, 136.69618546146 35.4303815249309, 136.696196154361 35.4289347198621, 136.698750323187 35.4289562699762, 136.698741104305 35.4293451286345, 136.69874099926 35.4293484389835, 136.698728567552 35.4298691105614, 136.698727037861 35.4298955825744)) ^^http://www.opengis.net/ont/geosparql#wktLiteral