メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.71695167689 35.1760519334776, 136.71695362761 35.1762118683112, 136.716958710943 35.1763715325675, 136.71698832656 35.176515161389, 136.717043865151 35.176725293545, 136.715124030291 35.1774038207914, 136.715119838491 35.1773863406308, 136.714787325227 35.1760081478241, 136.71464323368 35.1754645889767, 136.714521486147 35.1749830136486, 136.715838570387 35.175145010836, 136.716952498611 35.1752708905105, 136.71695233976 35.1755960265061, 136.71695167689 35.1760519334776)) ^^http://www.opengis.net/ont/geosparql#wktLiteral