メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.482788322236 43.0422217297818, 141.481785985719 43.0431371072901, 141.481417154882 43.0434564623991, 141.480348871881 43.0429315727484, 141.480393067958 43.0428899535319, 141.480797826302 43.0425193608359, 141.481415181497 43.0420353465543, 141.482416514061 43.0411995090033, 141.482513731495 43.0411116153862, 141.483029151886 43.0412886489413, 141.483568948934 43.0414910933128, 141.483180639481 43.0418632827596, 141.482938012674 43.0420781339017, 141.482788322236 43.0422217297818)) ^^http://www.opengis.net/ont/geosparql#wktLiteral