メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.31228758887 43.0743675016015, 141.311692993545 43.0747128648609, 141.311224996731 43.0749847147309, 141.311221211314 43.0749813078737, 141.310835662241 43.0752127605406, 141.310418157729 43.0754633596988, 141.310046597358 43.0751243458315, 141.309588750748 43.074706696584, 141.309985855047 43.0744663409816, 141.310381822883 43.074231038273, 141.311462919879 43.0736015373931, 141.31200434567 43.0732884419937, 141.312842716978 43.0740367219682, 141.31228758887 43.0743675016015)) ^^http://www.opengis.net/ont/geosparql#wktLiteral