メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.628114389761 35.9670153605362, 139.628120646853 35.9670494211995, 139.628199496719 35.9673321664613, 139.627292399874 35.9672522775221, 139.627400379213 35.966974458801, 139.62752690594 35.9667174691574, 139.628042243055 35.9667616286084, 139.628114389761 35.9670153605362)) ^^http://www.opengis.net/ont/geosparql#wktLiteral