メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.901678899385 35.1429646913767, 136.901653730505 35.1429724527151, 136.901585598413 35.1429630049649, 136.901542295267 35.1428919210474, 136.90217187722 35.1425264071342, 136.902439049363 35.1423566426937, 136.90245379613 35.1424033667983, 136.902482669841 35.1426417467236, 136.902514728384 35.1427894974293, 136.902398792473 35.1427420562571, 136.901678899385 35.1429646913767)) ^^http://www.opengis.net/ont/geosparql#wktLiteral