メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.346760177723 37.2552702505468, 140.34647469079 37.2554780491341, 140.34560930557 37.2560267066977, 140.345057791823 37.2563719504655, 140.344719296609 37.256595460635, 140.34416637585 37.2559377559213, 140.343605160999 37.2552700878796, 140.344885141864 37.2547918846906, 140.345879853408 37.2543608059996, 140.346760177723 37.2552702505468)) ^^http://www.opengis.net/ont/geosparql#wktLiteral