メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.342892400898 43.096953552829, 141.342856836896 43.0971198084773, 141.342726771134 43.0975894841831, 141.341957585845 43.0974774610955, 141.341145567609 43.0973611538913, 141.341270214035 43.0968953043771, 141.341298379149 43.0968013588138, 141.341324623078 43.0966945277418, 141.341474955365 43.0967175239825, 141.341595303801 43.0967368366389, 141.341667206699 43.0967483797899, 141.342221133893 43.0968309895716, 141.342897040096 43.0969317875847, 141.342892400898 43.096953552829)) ^^http://www.opengis.net/ont/geosparql#wktLiteral