Decide how to model evidence use assumptions

[jodischneider]

One of the competency questions is:
"Are the evidence use assumptions for evidence item X concordant? unique? non-ambiguous?"

Will there be data in the graph asserting this? If so, what data would that be?

[jodischneider]

Evidence use assumptions need to be added to the data model. We could consider qualifiers -- but these would most naturally be qualifiers on the relationship. We will need to propose for the model and consider modeling implications.