メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.321607851379 43.7637421104371, 142.321310608843 43.7636647487493, 142.321642757385 43.7631074714796, 142.322028302795 43.7624769361227, 142.322543526696 43.7626144404561, 142.3226307808 43.7626804346375, 142.322809950756 43.7627394609153, 142.32333430689 43.7629054021238, 142.323647410594 43.7629970926024, 142.323089881049 43.7639163248661, 142.322991052649 43.7640972897463, 142.322880080686 43.7640715174252, 142.321865490098 43.7638252093058, 142.322130488852 43.7634402596853, 142.322082930341 43.7634288096338, 142.321698824491 43.763615703136, 142.321607851379 43.7637421104371)) ^^http://www.opengis.net/ont/geosparql#wktLiteral