// 3 examples have classification = "yes" and one ,"no"
ds2.add(ds.getExample(0));
ds2.add(ds.getExample(1));// "no"
ds2.add(ds.getExample(2));
ds2.add(ds.getExample(3));
ds2.setSpecification(new MockDataSetSpecification("will_wait"));
learner.train(ds2);
Assert.assertEquals("Yes", learner.predict(ds.getExample(1)));
}