Property path and language FILTER broken

[niklas88]

The following query returns an empty result while both skos:altLabel and rdfs:label do return results. Leaving away the FILTER makes the query makes the query work

PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT ?alias WHERE {
  wd:Q567 skos:altLabel|rdfs:label ?alias .
  FILTER (lang(?alias) = "en")
} 

Removing the FILTER unbreaks the query as does explicit use of the internal @en@ marker as in

PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX schema: <http://schema.org/>
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
SELECT ?label WHERE {
  wd:Q567 @en@skos:altLabel|@en@rdfs:label ?label .
}

So I guess the problem is that we're failing to apply the automatic @en@ transformation on property paths.

[lehmann-4178656ch]

Both queries now yield the same result on http://qlever.cs.uni-freiburg.de/Wikidata_Full/ I think this issue can be closed @niklas88 ?

[niklas88]

@lehmann-4178656ch yes forgot to add the "fixes" part in the commit message.