Allow for multiple concurrent leaders of an organization
The feature
Allow multiple persons to show up as the leader of an organization.
We need to remove the SAMPLE in organizational-optional.rq and select all that don't have end date, but I think we need to do some queries checking that we don't get multiple values from other organizations where the data is not kept up-to-date.
Why?
In some rare occasions, there may be multiple leaders, like at the Embassy of Germany in Stockholm. We should be able to display that properly.
Examples and inspiration
https://stockholm.diplo.de/se-de/botschaft/lebenslauf-botschafter-1513398
The SAMPLE function can be replaced with GROUP_CONCAT and it should work as it is. There is an example here: https://github.com/glaciers-in-archives/snowman/tree/main/examples/nested-lists-with-single-query
Great! We still probably need to do a cleanup as Wikidata is notoriously lacking end dates on office holders still. Here is a query (with a very coarse filter) with >1500 offices with >2 office holders without end date. https://qlever.cs.uni-freiburg.de/wikidata/vvdkAx?exec=true
Most of them aren't in Govdirectory, but many are of a type that could be.