メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.006851938279 34.9847278821435, 137.006706505981 34.9855204703975, 137.006586961936 34.9860822374119, 137.00524065521 34.9859208732992, 137.004266641861 34.9857895707176, 137.004511020369 34.984442520311, 137.004543888016 34.9842515706265, 137.004601974079 34.9839255081685, 137.006952718915 34.9842208806238, 137.006902917486 34.9844715300094, 137.006851938279 34.9847278821435)) ^^http://www.opengis.net/ont/geosparql#wktLiteral