メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.059089581335 42.9090894520389, 143.05749712956 42.9089582632705, 143.057449066535 42.9089558589164, 143.056964876496 42.9089144688021, 143.057338324047 42.9063955386759, 143.058176979139 42.9064672741722, 143.058561361777 42.9064938911423, 143.058948750675 42.9065526976027, 143.059145666041 42.9066198817288, 143.059320919004 42.9067498145257, 143.059096389421 42.9090393972122, 143.059089581335 42.9090894520389)) ^^http://www.opengis.net/ont/geosparql#wktLiteral