メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.583118392966 43.3332826464574, 145.582727138727 43.333751480504, 145.582356620851 43.3342261073176, 145.581975715461 43.3347222732525, 145.580599633152 43.3341304986145, 145.580955893412 43.3336626915365, 145.581354343608 43.3331702370904, 145.581725565654 43.3327083911857, 145.583118392966 43.3332826464574)) ^^http://www.opengis.net/ont/geosparql#wktLiteral