メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.0937500 35.4250000, 133.1000000 35.4250000, 133.1000000 35.4291667, 133.0937500 35.4291667, 133.0937500 35.4250000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral