メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.000261044358 34.9952032135868, 137.00029165014 34.9951988196681, 137.000343386611 34.99609027607, 137.000386614114 34.9966031794192, 137.000471461535 34.9974643274733, 137.000584842541 34.9984871431067, 136.999146410991 34.9987343925311, 136.998098601074 34.9989125896037, 136.997462540381 34.9971586522106, 136.997300043358 34.9966629771078, 136.998769273999 34.9963888170392, 136.998530952811 34.9958131741978, 136.998253176408 34.9953397352931, 137.000052206955 34.9946289556872, 137.000165814948 34.9949479991366, 137.000261044358 34.9952032135868)) ^^http://www.opengis.net/ont/geosparql#wktLiteral