メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.042634314803 43.5628752436666, 142.041817119406 43.5628303880021, 142.041815179464 43.562825074529, 142.040684094519 43.5630499032577, 142.039709638114 43.5634416392132, 142.038253392318 43.5640641396678, 142.038068992296 43.5638585246408, 142.037814318331 43.5635480669468, 142.040256102765 43.5625547487835, 142.041292113036 43.5621151938204, 142.042020690735 43.5618155528833, 142.042698375926 43.561832205802, 142.042634314803 43.5628752436666)) ^^http://www.opengis.net/ont/geosparql#wktLiteral