In order to produce data sets to test various query scenarios, we need to test wikidata with big datasets that resemble production data. Unfortunately, labs databases (wikidatawiki.labsdb) are not useful for this since they do not have the actual page data, so no way to access wikidata content. Loading whole wikidata dump anew for each instance we need to test seems wasteful, so it would be nice if there was a central repository with a read-only copy of production data or reasonable approximation of it, which could be used to test against it.