@Test(expected = DatatypeFormatException.class)
public void testRetrieveGeometryLiteral_multiple_lon() {

    Model model = ModelFactory.createDefaultModel();
    Resource feature = model.createResource("http://example.org#GeoFeatureX");
    feature.addLiteral(SpatialExtension.GEO_LAT_PROP, ResourceFactory.createTypedLiteral("0.0", XSDDatatype.XSDfloat));
    feature.addLiteral(SpatialExtension.GEO_LON_PROP, ResourceFactory.createTypedLiteral("60.0", XSDDatatype.XSDfloat));
    feature.addLiteral(SpatialExtension.GEO_LON_PROP, ResourceFactory.createTypedLiteral("70.0", XSDDatatype.XSDfloat));
    SpatialObjectGeometryLiteral.retrieve(model.getGraph(), feature.asNode());
}