メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.650491028638 42.8342917315343, 141.651157327414 42.8352374713354, 141.651768840437 42.8361088605896, 141.651065182999 42.8363768019435, 141.650795325791 42.8359743503666, 141.649462100054 42.8364620054769, 141.649134323703 42.8359971422547, 141.64882272785 42.8355199845272, 141.64849355771 42.8350422410323, 141.648478009847 42.8350195123066, 141.648209665937 42.8346161487516, 141.647970704181 42.834262664225, 141.649300872148 42.833766498713, 141.649968456448 42.8335354439472, 141.650491028638 42.8342917315343)) ^^http://www.opengis.net/ont/geosparql#wktLiteral