メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.506433064344 34.6799438981967, 135.506446216555 34.6803431468882, 135.505451732737 34.6803495421208, 135.504462607698 34.680350879168, 135.503494940132 34.6803783551984, 135.5034944716 34.6803641276267, 135.503481120462 34.679979103166, 135.503467074661 34.6795747801566, 135.504434169575 34.6795630778782, 135.504926036285 34.6795597232302, 135.505210934008 34.6795577799846, 135.505431416911 34.67955627986, 135.506424034242 34.6795394536855, 135.506433064344 34.6799438981967)) ^^http://www.opengis.net/ont/geosparql#wktLiteral