メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.019918434225 37.823399032755, 139.019272168813 37.8233814512043, 139.019166108121 37.8233788179296, 139.019186201622 37.8228568247442, 139.019208029912 37.8223227155779, 139.019448900386 37.8223282776404, 139.019958328172 37.822339700539, 139.019948724715 37.8225719040117, 139.01993592816 37.8228802891671, 139.019923540861 37.8232472390526, 139.019918434225 37.823399032755)) ^^http://www.opengis.net/ont/geosparql#wktLiteral