メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.808753878703 35.2895038537188, 136.809632344526 35.2896729356332, 136.809578783682 35.2898746093718, 136.809534328143 35.2899639856428, 136.809115506188 35.2904598612941, 136.808477298332 35.2911874809514, 136.807923688823 35.2909730183943, 136.807265699927 35.2907542997586, 136.807606752454 35.2900901692372, 136.807964036956 35.2894300296253, 136.808398842222 35.2894329408184, 136.80876170885 35.2894614825149, 136.808753878703 35.2895038537188)) ^^http://www.opengis.net/ont/geosparql#wktLiteral