メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.982624217067 35.0794486176928, 136.981991292624 35.0792026133828, 136.982031509912 35.0791475317563, 136.982157118528 35.0789387708506, 136.981950115763 35.0785453227018, 136.982116675971 35.0785670634713, 136.982782396532 35.0786540945903, 136.982724131798 35.0789566287223, 136.982709548991 35.0790323147388, 136.982694241318 35.0791070143224, 136.982624217067 35.0794486176928)) ^^http://www.opengis.net/ont/geosparql#wktLiteral