メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.820031429811 35.314069087601, 136.820371641115 35.3150281081186, 136.820404150138 35.3151430626611, 136.820050368444 35.3152862794078, 136.819741539083 35.3153636367013, 136.819227737923 35.3154855473188, 136.819115134258 35.3151416254864, 136.818912711789 35.3145880053311, 136.818695980696 35.3140055393744, 136.819133478603 35.3138885532229, 136.819883729445 35.3137403479132, 136.820031429811 35.314069087601)) ^^http://www.opengis.net/ont/geosparql#wktLiteral