メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.295785980599 40.5256907046388, 141.295642011097 40.5258797398983, 141.294913015725 40.5255167786168, 141.294562774327 40.5252964367261, 141.294284382403 40.5250649713822, 141.295266771794 40.5241516111304, 141.29561843847 40.5238231729428, 141.295876524462 40.5240716369806, 141.295964772538 40.5242264987254, 141.295849925151 40.5244265008014, 141.295143248106 40.5251943492682, 141.295857719895 40.525557367132, 141.295785980599 40.5256907046388)) ^^http://www.opengis.net/ont/geosparql#wktLiteral