メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.402335048698 43.093110836116, 141.402791769933 43.0936599582437, 141.40135220729 43.0942335670067, 141.400940978981 43.0936987734665, 141.400147904876 43.0926917806446, 141.400648817649 43.0925202437672, 141.401146741896 43.0923634516563, 141.401652189732 43.0922105810254, 141.401771377465 43.0923707554296, 141.402335048698 43.093110836116)) ^^http://www.opengis.net/ont/geosparql#wktLiteral