メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.360480989922 43.064434148143, 141.36117752937 43.0645226181142, 141.361213708654 43.0645280330174, 141.360930791816 43.065693028242, 141.360201840879 43.0656029680687, 141.359993704263 43.0655754684954, 141.359791503443 43.0655487879978, 141.359405580419 43.0654978211611, 141.359697899995 43.0643213690281, 141.360480989922 43.064434148143)) ^^http://www.opengis.net/ont/geosparql#wktLiteral