メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.013463404632 34.8851647032587, 137.013300718524 34.8858772516426, 137.013270028181 34.8860332158605, 137.01123187459 34.8855199617391, 137.011328369141 34.8851031375654, 137.011121639606 34.8850556167742, 137.010820037949 34.8850386830742, 137.010939770166 34.8847195045933, 137.010998643827 34.8845138529642, 137.013463404632 34.8851647032587)) ^^http://www.opengis.net/ont/geosparql#wktLiteral