I've run into this problem many times already. When someone answers, they might answer only part of my question. The next answer will intentionally answer a different part of the question since it was already touched upon in the first answer.

This ultimately leads to the answer I'm looking for, separated between two or even three different answers. This means my question was answered by the collective community instead of just one person.

I want to reward those that have participated, but it doesn't feel fair to choose one answer when they were all equally helpful to me.

How do I approach this issue?