メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.913676472698 35.3425515449177, 136.913679619893 35.3423968544413, 136.913712088776 35.3423479822573, 136.913924668837 35.342337985762, 136.913937823441 35.3425295349579, 136.913676472698 35.3425515449177)) ^^http://www.opengis.net/ont/geosparql#wktLiteral