def get_root_rest_element(self):
        return self.assignment
Create a VectorSpacesDataset with two inputs (features0 and features1)
dataset/ETHPy150Open OpenSlides/OpenSlides/openslides/assignments/models.py/AssignmentPoll.get_root_rest_element--crossover with--dataset/ETHPy150Open lisa-lab/pylearn2/pylearn2/models/tests/test_mlp.py/test_multiple_inputs