メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.14815313722 35.0633024628288, 137.14798480186 35.0636947081086, 137.147836342867 35.0636553337533, 137.147694365244 35.0636176750747, 137.147609247492 35.0635784724627, 137.147413346295 35.0634882446171, 137.147181171354 35.0633652327408, 137.147245553577 35.0633033393549, 137.14753667538 35.0630283108483, 137.147886269785 35.0631838132011, 137.14815313722 35.0633024628288)) ^^http://www.opengis.net/ont/geosparql#wktLiteral