メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.39693355647 44.1842938963444, 142.39616656069 44.1841543520722, 142.396405887886 44.1833776487208, 142.397183153056 44.1834903190965, 142.39693355647 44.1842938963444)) ^^http://www.opengis.net/ont/geosparql#wktLiteral