メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.724014561288 35.2826181969573, 136.724306481765 35.283152142826, 136.72416527404 35.2831400091429, 136.7240096802 35.2830017681624, 136.723949598024 35.2829323947967, 136.723656626414 35.2829775951184, 136.723485902187 35.2826537357889, 136.723233206661 35.2827699969561, 136.723123947358 35.2825926290309, 136.723864478714 35.2823437100216, 136.724014561288 35.2826181969573)) ^^http://www.opengis.net/ont/geosparql#wktLiteral