Thanks for your reply. I will try this out.
I was thinking about using Yaml metadata and dataview style inline meta data to achieve a sort of query drawer as in Discourse Graph.
With that I could query for Evidence where Evidence supports/ informs Claim in the Question.
I looked closer into the Discourse Graph and there is a lot more going on. You can set mutliple grammar relations so that Roam itself can figure out which evidence goes with which claim.
I hope the above makes sense. The main thing is that the Graph is doing a part of the thinking for you there.