メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.249702070047 43.0543005580019, 141.249650099738 43.0545534973099, 141.249569943607 43.055077096051, 141.249485911704 43.0554968555095, 141.248896097131 43.0555968427884, 141.24801337215 43.0557387122539, 141.247514470484 43.055803409119, 141.247577766863 43.0554033731516, 141.247709877872 43.0545176183661, 141.247789256052 43.0541545050067, 141.247826335399 43.0539095241678, 141.24810544291 43.0539253272244, 141.24810997216 43.0539887330235, 141.249734523592 43.0541094768125, 141.249702070047 43.0543005580019)) ^^http://www.opengis.net/ont/geosparql#wktLiteral