Silly me - I just assumed that the "Appendix:Preaching Themes List" (230 terms in alphabetical order with definitions) were:
- indexed as headwords
- linked to their Factbook entry.
This is for the resource Husser, Lydia. Preaching Themes: Dataset Documentation. Bellingham, WA: Faithlife, 2016. I suspect there are other similar resources.
I think this is an opportunity for a significant improvement that shouldn't require programming.