メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.907988065931 36.9488429813699, 140.907793183191 36.9488755067067, 140.907323365535 36.9489552919036, 140.906904658533 36.9472029771137, 140.907207012485 36.9471913770103, 140.907907536697 36.9471829382814, 140.907983502484 36.9476406362807, 140.908064830563 36.9479987369243, 140.907806337669 36.9480361318674, 140.907895684462 36.9484784328868, 140.907988065931 36.9488429813699)) ^^http://www.opengis.net/ont/geosparql#wktLiteral