メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.892988101775 43.0182225925101, 142.892061223757 43.0176621937584, 142.892052973334 43.0176568944394, 142.891963580464 43.017600005814, 142.89233837021 43.0172727042581, 142.892490992918 43.0171475772092, 142.892811026066 43.0168408355244, 142.892921110342 43.0167269180625, 142.893044927773 43.0168080872101, 142.89396305664 43.0173846329101, 142.892988101775 43.0182225925101)) ^^http://www.opengis.net/ont/geosparql#wktLiteral