メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.649662605338 32.467637853083, 131.648410834252 32.4679996853842, 131.648147849151 32.4675254294055, 131.648040516589 32.4667593959507, 131.647989543612 32.4663957229474, 131.648135913406 32.4655041438003, 131.648765903844 32.4658054893334, 131.649338808495 32.4661772279186, 131.649350425666 32.4667077274667, 131.649662605338 32.467637853083)) ^^http://www.opengis.net/ont/geosparql#wktLiteral