メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.731727638368 33.3801853394139, 132.730992649434 33.3806877905294, 132.730161621394 33.3798321199797, 132.730896608852 33.3793296755088, 132.731727638368 33.3801853394139)) ^^http://www.opengis.net/ont/geosparql#wktLiteral