メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.021968135003 31.6575363305185, 131.022372395541 31.657787961229, 131.022113714894 31.6580704428321, 131.021934794339 31.6583636197875, 131.021728933776 31.6589178114568, 131.021083802795 31.6597701590504, 131.021033984839 31.6598616340669, 131.020728092128 31.6603565087519, 131.020329832946 31.6608409692144, 131.019946854055 31.6599189054878, 131.019667606015 31.6594610582646, 131.019488200382 31.6592258701986, 131.019856879037 31.6590328687742, 131.020011722967 31.6589454628961, 131.020607358401 31.6583235570306, 131.021088229577 31.6578014503794, 131.021554522322 31.657296537907, 131.021968135003 31.6575363305185)) ^^http://www.opengis.net/ont/geosparql#wktLiteral