メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.133117918212 42.700633007742, 143.132645357933 42.7009247345495, 143.132414254838 42.7005846907423, 143.132952361464 42.7003561824802, 143.132373545702 42.6994681004159, 143.133529102913 42.6988516562734, 143.134436098958 42.700145986621, 143.133117918212 42.700633007742)) ^^http://www.opengis.net/ont/geosparql#wktLiteral