メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.784888405794 35.3855032959237, 136.78466541314 35.3854992093768, 136.783020124798 35.3854821514998, 136.782951854296 35.3854810895041, 136.782066599008 35.3854792523265, 136.782098188039 35.3831951686501, 136.782106537732 35.3830939995827, 136.784764605012 35.3830871826434, 136.784768857126 35.3831698002796, 136.784888405794 35.3855032959237)) ^^http://www.opengis.net/ont/geosparql#wktLiteral