メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.663103620739 33.2554529660414, 131.663048903484 33.2557788973484, 131.662909148867 33.2566231193665, 131.66286624419 33.2568315367709, 131.660045485462 33.2560296978627, 131.659803458431 33.2559562332159, 131.659942922277 33.2550693222382, 131.660069288069 33.2543194828598, 131.66075455894 33.254427078183, 131.661895945988 33.254551836981, 131.66323147987 33.2547155691422, 131.663103620739 33.2554529660414)) ^^http://www.opengis.net/ont/geosparql#wktLiteral