load ortholog relationships from AGR's "strict orthology" project

[andrewsu]

File available here: https://www.alliancegenome.org/downloads

Suggested by Judy Blake from MGI/AGR

[rwst]

What about ortholog groups from https://omabrowser.org/oma/home/ ?

[andrewsu]

OMA is currently licensed under CC-BY-SA https://omabrowser.org/oma/license/ so we would not be able to load to Wikidata without asking them to relicense.

Also, since the AGR is a consortium of many of the most popular model organisms, I think they would be the most trustworthy source for ortholog data on that subset of organisms.

[rwst]

Is there any variation in the definition of ortholog? The sets from both projects should not contradict in my opinion. But the license issue matters so I'm glad there is a source we can use. I have already criticized the ortholog property (P684) here: https://www.wikidata.org/wiki/Property_talk:P684#not_efficient_spacewise