Hi!
Vaguely related: The full list of items "different from" (P1889) another item sure does give an interesting read though. * http://tinyurl.com/h23q2et
Some pairs there are definitely unexpected. And I'm not sure about these two:
https://www.wikidata.org/wiki/Q1787424 https://www.wikidata.org/wiki/Q166542
Some days I have a feeling those should be P460... ;)