メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.19933303947 34.8221060464946, 137.198991525872 34.822297708812, 137.19847242924 34.8226133734367, 137.198294748508 34.8224105888318, 137.198595246657 34.8221175232021, 137.199018672324 34.8217230048918, 137.199633277196 34.8210241784195, 137.200098001709 34.8216100088965, 137.19933303947 34.8221060464946)) ^^http://www.opengis.net/ont/geosparql#wktLiteral