Hello, I have 3 easy questions for the Getty team. Can somebody answer?:
1) What graph database system is behind Getty LOD/SPARQL? (i.e. Virtuoso, Blazegraph etc)
2) Is it an Open Source version or commercial version?
3) I tried to make a simple counting query on SPARQL: "select (count(*) as ?c) where { ?s ?p ?o }", but I got Results:
(0) for AAT and Any. Why, and how can I make it work (alternatives perhaps?)?
Many thanks in advance,
Austrian Centre for Digital Humanities,
Austrian Academy of Sciences,
Go Sugimoto