メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.987880436983 43.5615740433307, 144.987298310222 43.5611773688734, 144.987174585443 43.5610931045816, 144.986867914803 43.5608852769016, 144.987224466896 43.5606234822476, 144.987419812924 43.5607688961407, 144.987815834511 43.5604179741085, 144.98782580205 43.5604245559939, 144.987930435203 43.5604971838621, 144.988611216804 43.5609584326617, 144.987880436983 43.5615740433307)) ^^http://www.opengis.net/ont/geosparql#wktLiteral