メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.378041670035 40.5526327141851, 141.37652413891 40.552520011244, 141.376113724482 40.5524542214569, 141.375641117102 40.5523001059728, 141.375312451512 40.5522026551366, 141.375045723869 40.5521674263736, 141.375579137254 40.5505495885202, 141.375803067975 40.5499414803331, 141.376624261891 40.5475875595343, 141.379112545706 40.5478848340916, 141.380036941892 40.5479863823274, 141.379403822369 40.5505414030151, 141.378658969209 40.5504152184187, 141.378041670035 40.5526327141851)) ^^http://www.opengis.net/ont/geosparql#wktLiteral