メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.319337658295 43.0625200597998, 141.320200439875 43.0626333405236, 141.320037676256 43.0631843811496, 141.320000387267 43.063373122143, 141.319890765869 43.0637842886295, 141.319196030364 43.0636828503587, 141.318558256522 43.0635888347085, 141.318663276357 43.0631653954616, 141.318732520693 43.0629252942456, 141.318773618904 43.0627830012755, 141.318786932798 43.0626892906485, 141.318844352546 43.0624572508128, 141.319054388675 43.0624839263664, 141.319317076986 43.0625173601006, 141.319337658295 43.0625200597998)) ^^http://www.opengis.net/ont/geosparql#wktLiteral