メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.470210853329 43.0433715230808, 141.471390784882 43.0435420994935, 141.472017598835 43.043799977733, 141.471644430275 43.0443366646261, 141.471459987282 43.0445871951531, 141.471045389301 43.0451918923552, 141.470628549781 43.0450296805674, 141.470405187729 43.0449680956137, 141.469907438201 43.0448423940508, 141.46988206056 43.0448360317504, 141.468409889778 43.0444575829454, 141.46827339824 43.0444268995452, 141.468296742027 43.0443275538283, 141.468584579228 43.0431025858861, 141.469302741668 43.043217912708, 141.470210853329 43.0433715230808)) ^^http://www.opengis.net/ont/geosparql#wktLiteral