Hi,
Is the data-set in task1_v4 and task2_v1 suitably far apart from each other as these both are from task4 and task5?
Suppose there be a distance metric dist(d1, d2) which gives a hypothetical distance between datasets, can we assume dist(d_i, d_j) to be almost similar for d_i, d_j \in {task1_v4, task2_v1, task4, task5} ?
That's a deep questions to which I do no have a good answer. After all, it's not clear to me what kind of metric it would even look like.
I will say, however, that they do not share supports.