メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.933899074345 34.88966109802, 136.933115222886 34.8898452468825, 136.9329427478 34.8893416166959, 136.933601436578 34.8890531321947, 136.934512830572 34.8885614452759, 136.934984916526 34.888413032916, 136.935239124646 34.8883291408277, 136.935267674289 34.8892937420164, 136.935070282333 34.8893457666347, 136.934540112658 34.8895026609439, 136.933899074345 34.88966109802)) ^^http://www.opengis.net/ont/geosparql#wktLiteral