メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.772631926906 43.2110120170512, 141.772435497777 43.2112146614409, 141.772196194446 43.2114345654791, 141.772027228578 43.2116170662919, 141.771790890675 43.2117709444252, 141.771537861426 43.2115254260169, 141.770712265606 43.2111133626214, 141.770957732682 43.2108311065384, 141.771375704279 43.2103741748704, 141.772284015258 43.2108321440784, 141.772631926906 43.2110120170512)) ^^http://www.opengis.net/ont/geosparql#wktLiteral