メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.272160591695 35.2566926228876, 136.272029100963 35.2567884104961, 136.271814964083 35.256914524124, 136.271444736035 35.2572001408534, 136.271265955318 35.2564657545963, 136.27171700546 35.256203196382, 136.272160591695 35.2566926228876)) ^^http://www.opengis.net/ont/geosparql#wktLiteral