メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.715889855902 43.3068085320653, 143.716197919912 43.3078025893082, 143.711443484149 43.3124397470469, 143.710459974305 43.3133989233097, 143.706890973375 43.3168006850095, 143.696814299697 43.3125393670746, 143.700426592042 43.3084429659053, 143.700982972402 43.3078952994556, 143.703015975367 43.3083788511848, 143.703767272922 43.3082445378463, 143.705085023312 43.3063313248712, 143.705982830103 43.3053245489009, 143.715100641284 43.3041993948868, 143.715336289053 43.3050221537305, 143.715889855902 43.3068085320653)) ^^http://www.opengis.net/ont/geosparql#wktLiteral