afs commented on issue #3463:
URL: https://github.com/apache/jena/issues/3463#issuecomment-3323572296

   Hi @cgrain ,
   
   Without data this isn't reproducible.
   
   How are you storing the data? and how are you executing the query?
   
   If you're not getting results, the first thing to do is simplify the query 
by removing parts until you do get some results. 
   
   > on a graph DB engine
   
   That would be a Ontotext GraphDB database?
   Are you using named graphs at all?
   


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