メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.791859971233 38.7338184676947, 139.791653845893 38.7334216620804, 139.791526480594 38.7327305246247, 139.791329286481 38.731544981705, 139.791053700391 38.7297496733496, 139.791361448793 38.729854464559, 139.793067799285 38.730451546162, 139.795596291303 38.7291547973456, 139.796179374003 38.7299359758678, 139.798789159122 38.7286098928269, 139.79918988877 38.7294525043446, 139.799661773014 38.7303837166352, 139.799464173968 38.7306219663229, 139.799202582779 38.730923696121, 139.797129305149 38.7309933326644, 139.796488856807 38.7311287008021, 139.795937395591 38.7314170156603, 139.795910846918 38.7314324048324, 139.795387361555 38.7317368706437, 139.795149584581 38.7318752388602, 139.791859971233 38.7338184676947)) ^^http://www.opengis.net/ont/geosparql#wktLiteral