メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.856610611736 35.2390223264089, 136.856583933626 35.2399669912243, 136.855201883676 35.2399394141131, 136.852427930608 35.2398748192574, 136.852485660889 35.2379452194723, 136.85389530709 35.2379740270494, 136.855268183135 35.2380007509004, 136.856635006461 35.2380338527226, 136.856610611736 35.2390223264089)) ^^http://www.opengis.net/ont/geosparql#wktLiteral