メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.215164630034 36.6842053376031, 137.215649209951 36.684234918814, 137.215876355988 36.6842470024654, 137.215848665457 36.6847401308642, 137.215815507829 36.6852757865365, 137.215588049693 36.6852529985843, 137.215409254121 36.6852337118515, 137.214800138079 36.6851770766398, 137.214479387484 36.6851455959033, 137.214471130253 36.685020489817, 137.214473417753 36.6846866275725, 137.214468058687 36.6841839389558, 137.215164630034 36.6842053376031)) ^^http://www.opengis.net/ont/geosparql#wktLiteral