[ ] Distributions have SPARQL endpoint URLs with subject filter query baked in, which we cannot process programmatically (reported; will be fixed)
[ ] https://cat.apis.beeldengeluid.nl/sparql times out for most queries (reported; a Virtuoso endpoint will become available which we can use instead of the current ClioPatria one)
http://data.beeldengeluid.nl/
data.spinque.com
Atlantis