メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.860384565959 38.7781869866587, 139.856395888007 38.7779292208877, 139.856515096513 38.7769135086985, 139.856656661603 38.7757477924518, 139.856767816841 38.774755096622, 139.857840457987 38.7743869507631, 139.858385319158 38.774192599799, 139.859777798454 38.7737139340795, 139.859997961003 38.7745828489523, 139.860135264405 38.7751513959665, 139.860631328854 38.7757774029223, 139.860384565959 38.7781869866587)) ^^http://www.opengis.net/ont/geosparql#wktLiteral