メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.8687500 34.4250000, 134.8750000 34.4250000, 134.8750000 34.4291667, 134.8687500 34.4291667, 134.8687500 34.4250000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral