メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.406893850941 43.0052120787064, 144.407591244149 43.0056615103885, 144.408042883722 43.0059525619893, 144.409763395662 43.0070612735545, 144.408648484206 43.0080042368473, 144.407945955012 43.0085802512883, 144.407088346038 43.0093143295894, 144.404201195974 43.0074776412166, 144.404897710504 43.006877006275, 144.404523069287 43.0066204667594, 144.405495907853 43.0058058218874, 144.406587746015 43.0048877239023, 144.406985643149 43.0051244074546, 144.406893850941 43.0052120787064)) ^^http://www.opengis.net/ont/geosparql#wktLiteral