All Swedish treebanks: Preposition stranding annotations are inconsistent

[AleksandrsBerdicevskis]

Cf. the same problem for English: UniversalDependencies/UD_English-EWT#87

Stranded prepositions are often annotated as obl on a verb, while in most cases they should be case on a nominal (non-projectivity notwithstanding).

Examples (some are valid cases of ellipsis where there seems to be no other choice but obl, though)
Correct examples with case.

[jnivre]

I would say the overwhelming majority here are elliptical cases and okay. I only found about one real error per treebank. Do you agree?

The elliptical cases seem to be mainly of four types:

1. Coordination of the type "deltagande i och frånvaro från X", where it is hard to come up with a better analysis than elliptical nmod for the first preposition.
2. Omitted relative pronoun: "mannen jag talade med", where the guidelines say that "med" should be obl through promotion.
3. Truncated sentences: "Tänk på:" (also promotion),
4. Modifiers of the type "saker att tänka på", where I also see no better analysis than promotion.