メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.782484051741 35.4453001748869, 136.782442521425 35.4448761065538, 136.782441241858 35.4448646593183, 136.783588174742 35.4448066319708, 136.783596233231 35.4448402835898, 136.783611310777 35.4451274048367, 136.782484051741 35.4453001748869)) ^^http://www.opengis.net/ont/geosparql#wktLiteral