メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.054403652223 42.9111542235527, 143.055187341108 42.911210399997, 143.055003049726 42.9123710532055, 143.054893401904 42.9123639463455, 143.054241157605 42.9123217558221, 143.053456479997 42.9122640328733, 143.05359917235 42.9110956561049, 143.054403652223 42.9111542235527)) ^^http://www.opengis.net/ont/geosparql#wktLiteral