メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.506552955587 34.6859895085977, 135.506558850887 34.6862898447162, 135.506561464946 34.6864243753505, 135.505576204647 34.6864374265037, 135.505298230239 34.686439396817, 135.504597011317 34.6864621849854, 135.503633928698 34.686473337182, 135.503629988441 34.6860611675861, 135.503629860983 34.6860539830225, 135.503623562886 34.6856512406874, 135.504578419097 34.6856310397375, 135.505555251098 34.6856216248546, 135.506545291313 34.6855990152788, 135.506552955587 34.6859895085977)) ^^http://www.opengis.net/ont/geosparql#wktLiteral