メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.409539503143 43.806369847527, 142.409531165006 43.8063769411932, 142.407359168267 43.8047334806811, 142.405070958417 43.8033233520867, 142.406269835657 43.8023075991066, 142.408073468059 43.8034283001196, 142.408631883363 43.8037756186914, 142.409119873268 43.8041346543769, 142.40955177039 43.8044879465555, 142.410714042009 43.8053704724225, 142.409539503143 43.806369847527)) ^^http://www.opengis.net/ont/geosparql#wktLiteral