メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.37068573826 43.0877917385396, 141.371104704798 43.0878436244044, 141.371532111447 43.0879026748756, 141.371752469533 43.0879332694373, 141.371615007316 43.0884662883404, 141.371323529169 43.0884299439641, 141.37121402635 43.0889602228454, 141.371113137695 43.0893646094595, 141.369603832042 43.0891559485176, 141.369704591348 43.0887611972934, 141.369842068317 43.0882215706939, 141.370117750842 43.0882549860728, 141.370233784186 43.0877316514954, 141.37068573826 43.0877917385396)) ^^http://www.opengis.net/ont/geosparql#wktLiteral