メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.862382116597 43.33656865199, 141.861677701254 43.3366790047896, 141.861550339443 43.3362194109208, 141.861411816234 43.335712589869, 141.861211540719 43.335060815872, 141.861117917125 43.3347560491437, 141.861829381607 43.334664147102, 141.862382116597 43.33656865199)) ^^http://www.opengis.net/ont/geosparql#wktLiteral