Hi,
Another recent example of a statement that does not seem to have been updated: one of the WDQS servers seems to think the population of Denmark is 5, though this was fixed on 1st of June. The other has the correct value, it seems.
It's hard to reproduce since only one of the servers has it. I got the error on this query: http://tinyurl.com/hnpxgyh (this is a variant of a not-so-simple example query I just built: "German states, ordered by the number of company headquarters per million inhabitants" [1]). For trying it out, this query might be nicer:
SELECT ?population WHERE { wd:Q35 wdt:P1082 ?population . FILTER (?population < 200) }
since you can change the "200" to trick the caching.
Cheers,
Markus
[1] https://www.mediawiki.org/wiki/Wikibase/Indexing/SPARQL_Query_Examples#Germa...
Side remark: using arithmetic operations on query results is a great way to get even more misleading statistics out of Wikidata ;-) It does not seem as if we have that feature yet in many example queries.