Agree that conceptually difficult to explain simply.

Found an interesting case that may help...

"Notes by an Oxford Chiel"

/book/      https://www.wikidata.org/wiki/Q19297412

/en edition/    https://www.wikidata.org/wiki/Q16604365

/en work/     https://en.wikisource.org/wiki/Notes_by_an_Oxford_Chiel

/de article/  https://de.wikipedia.org/wiki/Notes_by_an_Oxford_Chiel

Now if we have a de published translation it would get it's own /de edition/ with it's own translators,  viaf, etc. and it gets it's own dewikisource link.  So it has no inter-language link to enwikisource and v.v.  It would link  back to the /book/ and the /book/ has edition(s) that link the both editions.

Now how do we trace links between those works and pull usable data at a WS template? It didn't take to dig out an example and as time passes and effort continues this will be more and more the case.

Regards Billinghurst