Dbnary (https://kaiko.getalp.org/about-dbnary/) extracts data from Wiktionary dumps and has a SPARQL endpoint at https://kaiko.getalp.org/sparql. It would be useful to be able to do federated queries which combine their data with Wikidata's lexicographical data.
Example query: https://w.wiki/ASZY
Original: https://kaiko.getalp.org/sparql?query=select+*+%7B%0D%0A%09%3Flexeme+a+ontolex%3ALexicalEntry%3B%0D%0A%09%09rdfs%3Alabel+%3Flabel%3B%0D%0A%09%09lexinfo%3ApartOfSpeech+%3Fpos%3B%0D%0A%09%09lime%3Alanguage+%3Flang.%0D%0A%7D+limit+10