We should be able to pass a group of entity keys for the left-hand side and a group of entity keys for the right-hand side.
This is useful when looking at the labels an artist has been released on. You would want to know if artists related to that artist have also been released on those labels. The labels and related artists here are at degree-1. You would also want to ignore label relations beyond degree-1 (due to exponential complexity).
We should be able to pass a group of entity keys for the left-hand side and a group of entity keys for the right-hand side.
This is useful when looking at the labels an artist has been released on. You would want to know if artists related to that artist have also been released on those labels. The labels and related artists here are at degree-1. You would also want to ignore label relations beyond degree-1 (due to exponential complexity).