メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.36542647768 43.0800878572831, 141.365344916352 43.0800817412055, 141.365171678906 43.0805652489156, 141.364460806513 43.080466496374, 141.363861297222 43.0803831596473, 141.363982521756 43.079841300742, 141.364105900994 43.0792895424993, 141.36477140256 43.0793667066685, 141.365042916588 43.0794069942984, 141.365109364474 43.0794165099732, 141.36557449822 43.0794764372728, 141.36542647768 43.0800878572831)) ^^http://www.opengis.net/ont/geosparql#wktLiteral