メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.333410583358 43.7673061012084, 142.333726881127 43.7674106652894, 142.333913638592 43.7674775599513, 142.336581851713 43.7682140831162, 142.336105967703 43.7694160991735, 142.334724655468 43.7689845151684, 142.334320866131 43.7688605074025, 142.333287836352 43.7685297801783, 142.33279993026 43.7683790161215, 142.33207312723 43.7681528614773, 142.332541188446 43.7673323314831, 142.332680426966 43.767084822202, 142.333410583358 43.7673061012084)) ^^http://www.opengis.net/ont/geosparql#wktLiteral