メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.469415503135 43.0335341267138, 144.469529388966 43.0337997913236, 144.469722442094 43.0342243354726, 144.469939302598 43.0347028493883, 144.470121206242 43.0351264128743, 144.470313706202 43.03556728154, 144.46973025608 43.0356949311457, 144.468698626206 43.0359531517606, 144.468502232443 43.0355103861515, 144.46830883997 43.03508162829, 144.468090403359 43.0346175582248, 144.467910444582 43.0342102694367, 144.467790329872 43.0339418406876, 144.467624562625 43.0335983440952, 144.469253534987 43.0332058196483, 144.469415503135 43.0335341267138)) ^^http://www.opengis.net/ont/geosparql#wktLiteral