Examples from the Web for supplementation
There should be no supplementation of poor-law relief by charity.
Illusion is partial, hallucination complete, supplementation of an external object.Criminal Psychology|Hans Gross
In this case of the Roman gospel, however, textual evidence enables us to trace something of the history of supplementation.The Making of the New Testament|Benjamin W. Bacon
On the first alternative (if the supplementation works independently), it would ensue that the seed is in no way a cause.
If they do assist the thing, is this assistance (or supplementation) other than the thing or not?