メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.844577377058 35.4119898056212, 136.845539140602 35.4120807718087, 136.845333425453 35.4136015685636, 136.84513500688 35.415211573093, 136.844175138546 35.415117511777, 136.84356725777 35.4150706830986, 136.843571449641 35.4141146921027, 136.843575017443 35.4134553127255, 136.843574739417 35.4123250535863, 136.843578050646 35.4119144707526, 136.844577377058 35.4119898056212)) ^^http://www.opengis.net/ont/geosparql#wktLiteral