メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.953212704621 39.6420841322251, 141.953281177428 39.6420971572283, 141.95408631749 39.6421636514351, 141.953783279546 39.6431801303259, 141.953716497707 39.6434237216714, 141.953453518477 39.6442555888488, 141.953155062741 39.6442109377447, 141.952942287174 39.6441791114881, 141.952803123303 39.6441628274554, 141.952591188019 39.6441379927821, 141.951818487816 39.6440354285485, 141.951739858515 39.6440249993126, 141.951846115428 39.6435367784267, 141.951990821843 39.6429439008152, 141.952200033148 39.6420000720346, 141.95277984548 39.6420632965636, 141.953212704621 39.6420841322251)) ^^http://www.opengis.net/ont/geosparql#wktLiteral