メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.085048780363 35.1382520855409, 136.084326272699 35.1378801147454, 136.084511074156 35.1376537767253, 136.084714053911 35.1374109431006, 136.085131793121 35.1368645536823, 136.085852505132 35.1372682054657, 136.085048780363 35.1382520855409)) ^^http://www.opengis.net/ont/geosparql#wktLiteral