Hannah Bast

Concerning [PubChemRDF](https://pubchemdocs.ncbi.nlm.nih.gov/rdf): I have just started a download of the core data (everything except compound/nbr2d and compound/nbr3d) and will set up a QLever endpoint for it. I will let you...

Thank you for these questions and queries, Lorenz, I will reply to them one comment at a time. Concerning your first query ("contains envelope"): This was realized using #413, which...

Concerning your second query ("the 16 states of Germany, selected via their ISO3166-2 code"): In your query, the quotation mark in the REGEX was not escaped. If you escape it,...

Concerning your third query ("all castles in Switzerland"): As explained in the [osm2rdf paper](https://ad-publications.cs.uni-freiburg.de/SIGSPATIAL_osm2rdf_BBKL_2021.pdf), the `ogc:contains` predicate (which would be enormous if materialized) is realized via two separate and manageable...

Concerning your fourth query ("all highway road segments"): ´osm2rdf` has various options to control which of these triples are produced: https://github.com/ad-freiburg/osm2rdf/blob/master/src/config/Config.cpp#L86-L110 . In the instances that currently run on https://qlever.cs.uni-freiburg.de,...

Concerning your fifth query ("all 16 states of Germany" on OSM Planet): I have changed the name of this example query :-)

@LorenzBuehmann Thanks + yes, I will clean up the example queries, they should indeed all work. Where is the Swiss castle query from, that's not from us, or is it?...

@LorenzBuehmann Thanks for reminding me about the "All castles in Switzerland" query :-) It came from one of our users and since I found it interesting and challenging, I added...

You are absolutely right. It currently does not have an optional for efficiency reasons and because the OPTIONAL is not yet 100% correct. This will hopefully change soon. Do you...

@joka921 Surprisingly, this query still fails after so many years. Here is a simpler variant with the same problem: ``` PREFIX rdf: PREFIX wdt: SELECT ?rdftype WHERE { ?type rdf:type...