メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.042458056352 43.5651340558232, 142.042402940964 43.5660828751703, 142.042398631939 43.5661196475505, 142.041528556058 43.566077127111, 142.041509552603 43.5663085649014, 142.040224681637 43.566302070803, 142.040023445282 43.5660460074339, 142.039209812927 43.5651410397295, 142.040511272921 43.5644832253632, 142.040919253673 43.5643023824588, 142.041362090758 43.5641789866303, 142.041686377428 43.5641285848237, 142.042526290422 43.564138141697, 142.042458056352 43.5651340558232)) ^^http://www.opengis.net/ont/geosparql#wktLiteral