メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.321535204966 43.0415891516837, 141.321704556916 43.0416768206662, 141.323250842508 43.0424752872473, 141.323080315722 43.0426565526598, 141.322358031212 43.0434130033346, 141.3218333228 43.0431533111794, 141.320611453782 43.0425421470124, 141.320519775897 43.0424982910982, 141.320366122597 43.0424884624217, 141.320509404872 43.0423213974535, 141.320511505195 43.0422140219087, 141.320743274537 43.0416984177497, 141.320943043568 43.0414732964074, 141.320978003983 43.04143131212, 141.321017596588 43.0413809258514, 141.321052875876 43.0413368340108, 141.321095856498 43.0412843650904, 141.321163366952 43.0412139503582, 141.321224108594 43.0411472777916, 141.321304919027 43.0410341402087, 141.321837838826 43.0412692855712, 141.321535204966 43.0415891516837)) ^^http://www.opengis.net/ont/geosparql#wktLiteral