メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.686365718917 35.0658768800408, 136.686817948695 35.0657970669663, 136.687020231155 35.0657728233277, 136.687149046612 35.0662102804541, 136.687443798517 35.0661507225784, 136.687294974525 35.065676406331, 136.687748522771 35.0656010895479, 136.687997699482 35.0666412672588, 136.687668079411 35.0667056005553, 136.686724047354 35.0668970065635, 136.686381064058 35.0669714828539, 136.686192199244 35.0670029035358, 136.685921020441 35.0659509445659, 136.686107064838 35.0659205264277, 136.686365718917 35.0658768800408)) ^^http://www.opengis.net/ont/geosparql#wktLiteral