メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.055876658006 42.9088129716982, 143.056964876496 42.9089144688021, 143.056887487679 42.9093406679317, 143.056876508722 42.9094010204089, 143.056724924773 42.9102346885691, 143.056718224551 42.9102929718088, 143.05608501979 42.9102492505512, 143.054574317193 42.9101448050512, 143.054544628216 42.9101425522368, 143.054550755774 42.9100988321249, 143.054605700322 42.9096596399535, 143.054624968553 42.9096623881677, 143.0546677328 42.9092505693214, 143.054673767129 42.9091923619475, 143.054727363723 42.9087084469608, 143.054917888128 42.9087256053781, 143.055876658006 42.9088129716982)) ^^http://www.opengis.net/ont/geosparql#wktLiteral