メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.913621152831 35.3625423963441, 139.911707888848 35.3628214830178, 139.911635723069 35.3624648541029, 139.911542731343 35.3620233111412, 139.911454593037 35.3616327485667, 139.911265656693 35.3609926824827, 139.911078454006 35.3604715563962, 139.910913697122 35.3600601284473, 139.9123870461 35.3598012751349, 139.912441401874 35.3599064459949, 139.913128240235 35.3613648811189, 139.913621152831 35.3625423963441)) ^^http://www.opengis.net/ont/geosparql#wktLiteral