メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.052255145461 42.910358283086, 143.052113387747 42.910995436409, 143.051345380157 42.9109454590443, 143.050591158397 42.9108958033368, 143.050672413736 42.91026983431, 143.050679395018 42.910217879977, 143.050722694739 42.9098969992289, 143.050810597174 42.9099022221298, 143.051443903598 42.9099397827212, 143.052289324857 42.9099988535603, 143.052275030056 42.9102686802935, 143.052255145461 42.910358283086)) ^^http://www.opengis.net/ont/geosparql#wktLiteral