Hi Dan,

Oh, very interesting! I never noticed that "Typical Properties" section before (I'm looking at it in English). I still think a separate API service would be necessary, so that it could attach a "property type" and a "diffusion" value for each property, but the part about getting the expected properties for each class seems easier than I thought it would be.

-Yaron

Perhaps you could get properties data from Sqid? It has property 
frequencies for each class: 
 
https://tools.wmflabs.org/sqid/#/view?id=Q8502&lang=nb 
 
Dan Michael