メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.859631136035 37.4832058793329, 138.858460917299 37.48349200229, 138.85774788777 37.483640858402, 138.85655064505 37.4839163302229, 138.85635003987 37.483262254164, 138.85615352462 37.4825189046558, 138.855965318434 37.4821097649698, 138.857104275924 37.4818523563287, 138.857649060444 37.4817273845301, 138.858994257023 37.4814192171104, 138.859269677277 37.4822321533696, 138.859631136035 37.4832058793329)) ^^http://www.opengis.net/ont/geosparql#wktLiteral