メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.794761574018 43.2089053129368, 141.794756471459 43.2095948701625, 141.794270445084 43.2095972367106, 141.793638427958 43.2094304429238, 141.793616470327 43.2094031387878, 141.792404076742 43.2094056381187, 141.792384420614 43.2081835209653, 141.79348226657 43.2081897092915, 141.793694983908 43.2081699460706, 141.794220588719 43.2081120384971, 141.794575460159 43.2080648452221, 141.794750614065 43.2080541450596, 141.794761574018 43.2089053129368)) ^^http://www.opengis.net/ont/geosparql#wktLiteral