メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.017865328974 37.7664879439662, 139.017209521167 37.7665277084698, 139.017198008448 37.7651698874208, 139.017148822228 37.7643218739304, 139.017080543857 37.7638641992013, 139.018302370559 37.7638981125841, 139.018321630811 37.7641568868221, 139.018340172182 37.7644059998236, 139.018365092427 37.7647408532798, 139.018393384911 37.765120993594, 139.0185097846 37.7664489321098, 139.017865328974 37.7664879439662)) ^^http://www.opengis.net/ont/geosparql#wktLiteral