メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.333973651763 43.0381372424513, 141.333483182864 43.0386496066871, 141.332179641148 43.0379850223495, 141.332444061039 43.0377219279968, 141.332669155481 43.0374791256954, 141.332806473071 43.0373360492654, 141.332841702036 43.0373010968646, 141.333400948219 43.036702287307, 141.334021180831 43.0370496890633, 141.33469028913 43.0374052868402, 141.333973651763 43.0381372424513)) ^^http://www.opengis.net/ont/geosparql#wktLiteral