メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.042526290422 43.564138141697, 142.041686377428 43.5641285848237, 142.041362090758 43.5641789866303, 142.040919253673 43.5643023824588, 142.040511272921 43.5644832253632, 142.039209812927 43.5651410397295, 142.038748912398 43.5646118881019, 142.038458125869 43.5642904679029, 142.038253392318 43.5640641396678, 142.039709638114 43.5634416392132, 142.040684094519 43.5630499032577, 142.041815179464 43.562825074529, 142.041817119406 43.5628303880021, 142.042634314803 43.5628752436666, 142.042526290422 43.564138141697)) ^^http://www.opengis.net/ont/geosparql#wktLiteral