メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.3312500 34.6500000, 133.3375000 34.6500000, 133.3375000 34.6541667, 133.3312500 34.6541667, 133.3312500 34.6500000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral