メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.043037805021 35.1862475533264, 137.040884348924 35.1870248405667, 137.04020791529 35.18539559247, 137.040519114755 35.1852293690426, 137.040969215093 35.1848644846487, 137.041363751239 35.1844963732514, 137.041704242483 35.1842058091785, 137.041882892107 35.1844777479585, 137.042538422672 35.1854755544112, 137.043037805021 35.1862475533264)) ^^http://www.opengis.net/ont/geosparql#wktLiteral