メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.469982986801 43.5896620817332, 142.470717604816 43.590152653895, 142.471050534031 43.5903840110962, 142.471649997945 43.5907941775344, 142.47048868881 43.5916865908572, 142.469894247027 43.5912875905453, 142.469516450724 43.5910236154697, 142.468823434109 43.5905394253497, 142.468150143465 43.5900755533383, 142.467704634576 43.5897710197157, 142.468450429519 43.5891899825004, 142.468861199497 43.5888699578945, 142.469365271049 43.5892224759947, 142.469998230854 43.5896503782903, 142.469982986801 43.5896620817332)) ^^http://www.opengis.net/ont/geosparql#wktLiteral