メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.052198657076 42.9044797535489, 143.05233310436 42.9044895731667, 143.053000182681 42.9045384241335, 143.052781053194 42.9060674521909, 143.052145318255 42.9060242182284, 143.052118312609 42.9060222970545, 143.051306088948 42.9059589826603, 143.0514167811 42.9051324287239, 143.050782527262 42.9043755773766, 143.051416089427 42.9044222105098, 143.052198657076 42.9044797535489)) ^^http://www.opengis.net/ont/geosparql#wktLiteral