メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.461261116009 43.0541088734563, 141.461220758149 43.0541524117224, 141.461062810943 43.0544438307381, 141.461023569649 43.0545162122756, 141.460833308444 43.0548145110107, 141.460600420911 43.0551535194958, 141.460043389063 43.0549342490004, 141.460004820677 43.0544385679089, 141.459998277874 43.0543653780763, 141.459937926633 43.0538182758799, 141.459812239993 43.0525560137612, 141.461814472459 43.0532777839896, 141.461261116009 43.0541088734563)) ^^http://www.opengis.net/ont/geosparql#wktLiteral