メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.912961872216 35.1698898991757, 136.912429860585 35.1698366529023, 136.912383440458 35.1701178181289, 136.910540981383 35.1700119709101, 136.91056783187 35.1696554112053, 136.910607371619 35.1691297238369, 136.911864051407 35.1692105869387, 136.912848403241 35.1692917735197, 136.912962418478 35.1698865200759, 136.912961872216 35.1698898991757)) ^^http://www.opengis.net/ont/geosparql#wktLiteral