メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.241860176822 43.1092612923557, 141.242332343295 43.109419819736, 141.242664815849 43.1095509544407, 141.242834722063 43.1095975999089, 141.243131485275 43.1097113296548, 141.242332642407 43.1109876565827, 141.24217707516 43.1107923905137, 141.242014363243 43.1105995942678, 141.241503349668 43.1101345826374, 141.241214010651 43.1098611287201, 141.241046157063 43.1096894542471, 141.240985452587 43.1096333604454, 141.240922002505 43.1095865946378, 141.240700138739 43.1095008074439, 141.241079268207 43.1089766859482, 141.241860176822 43.1092612923557)) ^^http://www.opengis.net/ont/geosparql#wktLiteral