Do you know of any RDF-star datasets?

Hi,

No idea where to ask this question but here. I hope that straying off 
the usual topics of a W3C WG a bit is not much of an inconvenience for you.

I've been looking for /any/ RDF-star datasets (/datasets/ in the 
broader, informal meaning, not /datasets/ as defined by the RDF spec), 
anything bigger than examples or test cases that can be found on the 
WG's websites.

I'm asking because while there are some tools that can work with 
RDF-star (Jena, RDF4J...), without a bigger dataset it's hard to 
benchmark them (both in terms of parsing speed, but also query execution 
speed). I could resort to writing a synthetic dataset generator, but I'd 
much, much rather use something real :) Of course, open licenses for the 
data are preferred.

Does anybody know where I might find something like this? Thanks!

-- 
Piotr Sowiński
Systems Research Institute
Polish Academy of Sciences