メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.35898184532 43.7539176359406, 142.359481052891 43.7542644558898, 142.359020833768 43.7546168888673, 142.35845786533 43.7550381054216, 142.35796090762 43.7547079323561, 142.35757996414 43.7549944497312, 142.35707812506 43.7546508982392, 142.356571850806 43.7543041488173, 142.35744219985 43.7536265369405, 142.357933819473 43.7532305823805, 142.35898184532 43.7539176359406)) ^^http://www.opengis.net/ont/geosparql#wktLiteral