メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.867020485168 43.3372929092249, 141.86699589711 43.337480600497, 141.867031011629 43.337685650395, 141.867112476623 43.3379590719821, 141.867204111094 43.3382705045312, 141.864372310425 43.3387170883338, 141.864240054474 43.3382630361592, 141.863928408545 43.3372056092785, 141.864864767268 43.3370603661237, 141.865881994672 43.3369020944537, 141.866254234531 43.3368421551342, 141.867444991558 43.3366518173562, 141.867220444104 43.336902698582, 141.867099688839 43.3370958357096, 141.867020485168 43.3372929092249)) ^^http://www.opengis.net/ont/geosparql#wktLiteral