Hi, both instance and subclass is possible, see https://www.wikidata.org/wiki/Help:Item_classification

This has been a subject of dispute though, but this is a powerful tool, allowed by standards like OWL2 through "punning"

2014-12-30 22:35 GMT+01:00 Federico Leva (Nemo) <nemowiki@gmail.com>:

james@j1w.xyz, 30/12/2014 22:04:

Are there processes in place to manage the integrity of
these structural components of Wikidata?

Yes.
https://www.wikidata.org/wiki/Wikidata:Database_reports/Constraint_violations

Nemo

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