メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.339214837608 43.0482280965441, 141.339166932468 43.0486010257779, 141.339140042623 43.0488110266572, 141.339095241323 43.049252832989, 141.339072823719 43.0494134131272, 141.339050794396 43.0495712209678, 141.339025303851 43.0497537978021, 141.339009115649 43.0499015012581, 141.336984717869 43.0497799361943, 141.337005365621 43.0496034328407, 141.33705277026 43.0492457631094, 141.337066117805 43.0491218076166, 141.337094950524 43.0489174492205, 141.33713834323 43.0486098914407, 141.337159135981 43.0484558244565, 141.337206646117 43.0480909113357, 141.339214837608 43.0482280965441)) ^^http://www.opengis.net/ont/geosparql#wktLiteral