メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.863611149682 35.1871913121378, 136.863284543567 35.1876056383409, 136.862991310906 35.1879596952851, 136.862554009504 35.1885143065702, 136.862047311413 35.1882322645868, 136.861499402591 35.187914553469, 136.861677206426 35.1876906323578, 136.861926092996 35.1873772422745, 136.862216514567 35.187029870868, 136.862554138047 35.186606701324, 136.863611149682 35.1871913121378)) ^^http://www.opengis.net/ont/geosparql#wktLiteral