メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.395104615791 43.7541296728795, 142.395148312786 43.7546026022415, 142.393105913535 43.7547216945454, 142.392056340099 43.7547812538296, 142.392003898208 43.7545996601734, 142.391020504216 43.7546557170196, 142.390981987137 43.7543609934671, 142.390981825488 43.7542924469794, 142.390962097771 43.7539497232475, 142.390957102454 43.7538366169164, 142.393018431026 43.7537278231753, 142.395065579081 43.7536292947898, 142.3950661174 43.753636220525, 142.395104615791 43.7541296728795)) ^^http://www.opengis.net/ont/geosparql#wktLiteral