Turns out, only maybe 1/3 of all available predicates are actually
part of the exported datasets. No surprise my queries are hitting
nothing.

I like playing w/ languages, but I am not sure at all if this is a
good idea.

First draft; will be revised.

This will be very useful for further integration w/ JVM tech.

It's a script that generates a Java/RDF4J file with constants
for the OWL ontology. This makes working with ULO convinient.

I also etst performance and it looks okay on my small laptop.

- This also works just as well as a REST endpoint.

- Most likely this is just a demo. But it works for that.

I'll only need it for a demo, probably. But it's nice to have.