メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.995563836399 35.0003425955748, 136.995464952772 35.0003656945028, 136.995329015483 35.0003959942926, 136.994025224006 35.0006576547749, 136.993982980245 34.9997514932802, 136.995542494284 34.9995656955505, 136.995543934198 34.9997239449903, 136.995563836399 35.0003425955748)) ^^http://www.opengis.net/ont/geosparql#wktLiteral