メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.25586332349 41.0911640577788, 141.254889486774 41.0911686885941, 141.253179279547 41.0911490557745, 141.252341084355 41.091198268853, 141.252415754699 41.0893577872064, 141.251659460607 41.0893414057655, 141.250003531616 41.0892881815579, 141.25004638427 41.0879260393086, 141.252490559068 41.0879556253139, 141.252508986533 41.0879558471557, 141.252595088882 41.0865481570669, 141.256192977144 41.0866241842548, 141.256191963952 41.0866547934497, 141.256096223244 41.0882261720582, 141.256027173472 41.0895172170358, 141.255912291758 41.0906451992471, 141.25586332349 41.0911640577788)) ^^http://www.opengis.net/ont/geosparql#wktLiteral